- -gate
- -wise
- Épée, foil or sabre
- a.k.a. or aka
- Abject vs object
- Abracadabra
- Accent vs accentuate
- Accept vs except
- Access
- Accessory vs accessary
- Accost
- Ad-lib and ad lib
- Adam's apple
- Adaptable or adaptive
- Addlepated, addlebrained and addleheaded
- Adduce vs educe
- Advent
- Adventurous vs adventuresome
- Aegis
- Affluenza
- Aggrandize
- Agitprop
- Agog or agape
- Agreement vs agreeance
- Ajar
- Alimentary vs elementary
- Alliteration vs assonance
- Alma mater
- Also-ran
- Amative or amatory
- Amends vs amends
- American Indian vs Native American
- Anachronism
- Anamorphic
- Anathema
- Angel vs angle
- Annal vs annual
- Anodyne vs analgesic
- Another string in your bow
- Ante- vs anti-
- Antediluvian
- Antichrist
- Antifa
- Antimacassar
- Anyday vs any day
- Anymore or any more
- Anyone or any one
- Apocryphal vs canonical
- Apologetics
- Apostle
- Appellation vs appellative
- Approbation vs approval
- Arcane and obsolete
- Arise or rise
- Arnold Palmer
- Artesian vs artisan
- Ascribe vs subscribe
- Assignation or assignment
- Astride
- Astrology vs astronomy
- Asylum
- At a loose end
- Atlas
- Au fait
- Au pair
- Autobiography vs biography
- Aw or awe
- Backwater or backwaters
- Bacteria vs virus
- Bailiwick
- Bain-marie vs double boiler
- Balderdash
- Ball vs bawl
- Bamboozle
- Bane
- Bark vs barque
- Barnstorm
- Bastion
- Beach vs beech
- Behalf
- Behold and beholden
- Behoove
- Belle vs beau
- Bellwether
- Bellyache
- Benefactor vs patron
- Bent or bended
- Beside or besides
- Besotted
- Bespeak vs bespoke
- Bespeckled or bespectacled
- Big kahuna
- Bingeing or binging
- Bingo
- Bite-size or bite-sized
- Bivouac
- Black market
- Blaspheme
- Blather vs blabber
- Blitzkrieg
- Blockbuster
- Blooper
- Bloviate
- Blowhard and windbag
- Blue blood
- Bluetooth
- Bodega
- Bogeyman
- Boggle the mind and mind-boggling
- Bohemian
- Bollocks vs bollocking
- Bombogenesis
- Boondocks vs boonies
- Boot camp
- Bowdlerize
- Braggadocio
- Braggart vs bragger
- Brainwash
- Brand spanking new
- Bric-a-brac and knick-knack
- Brickbat
- Bridezilla
- Brief vs debrief
- Bring vs take
- Bromide
- Brouhaha
- Bugbear or bugaboo
- Bullseye or bull's eye
- Bumpkin
- Bunk vs debunk
- Busybody
- Butterfingers
- Buzzword
- Cahoots
- Cakewalk
- Calumny
- Camaraderie vs comradery
- Canard
- Candor or candour
- Candy corn
- Cantankerous
- Cantor vs canter
- Capitulate vs recapitulate
- Car hood and car bonnet
- Carbon copy
- Caretaker vs caregiver
- Cartography
- Cassandra
- Catcall
- Caucus
- Cavalcade
- Cay, quay and key
- Celebrant or celebrator
- Certifiable
- Chain letter
- Chalk up vs. chock
- Charade and charades
- Charlatan
- Charnel house
- Chatbot
- Chav
- Check kiting
- Chicanery
- Chick flick and chick lit
- Chimera
- Choate or inchoate
- Chock-a-block vs chockablock
- Chortle
- Christmas Adam
- Chunder or chunter
- Cisgender vs transgender
- Citizen journalism
- Civic vs. civil
- Civil rights and human rights
- Claptrap
- Cleave
- Clew vs clue
- Clickbait
- Cliffhanger
- Clone
- Cloth vs clothes
- Cloture vs closure
- Cloying and mawkish
- Coal, cole or kohl
- Cockamamie
- Coddle and mollycoddle
- Cold-call
- Collocate vs colocate
- Comeuppance
- Commencement
- Conservatory, solarium or sunroom
- Constant vs consistent
- Content or contented
- Contumely
- Conundrum
- Convivial vs congenial
- Cooties
- Cornball and corny
- Cosplay
- Cottage industry
- Cotton candy or cotton floss or fairy floss
- Couch-surf
- Covert vs overt
- Crackerjack
- Crap
- Creature comfort
- Cronyism
- Crowdsourcing vs crowdfunding
- Cruciferous
- Crèche and manger
- Cul-de-sac
- Curmudgeon
- Cut off your nose to spite your face
- Cyber-
- Cyberspace
- Cybersquatting
- Cynical
- Dahlesque
- Damp squib
- Debark or disembark
- Deepnet, darknet and deep web
- Defenestration
- Deleterious vs detrimental
- Demagogue vs demigod
- Demeanor or demeanour
- Demon vs daemon
- Deplane or disembark
- Deteriorate vs decline
- Devil is in the details vs. God is in the detail
- Dewclaw
- Diagram
- Dibs and calling dibs
- Dichotomy vs paradox
- Dickensian
- Dietician or dietitian
- Dilapidated
- Dirigible or blimp
- Disdain or distain
- Distaff
- Ditto and ditto mark
- Dogged vs dogged
- Doggerel
- Don't's or don'ts
- Done vs dun
- Donner or Donder
- Donnybrook
- Doodle
- Doomsday vs Domesday
- Dos or do's
- Dotage vs senility
- Dotard
- Double whammy vs whammy
- Doublethink, doublespeak or double-talk
- Downplay or play down
- Downright vs outright
- Doxing and doxxing
- Dreidel or dreidl
- Drive-by
- Druthers
- Dry goods
- Duck tape or duct tape
- Due to vs because of
- Dumpster fire
- Dumpster vs dumpster
- Duplicate vs duplicity
- Ear candy and eye candy
- Earmark
- Earworm
- Easter egg
- Ecumenical
- Effete
- Eggnog
- Elbow grease
- Embolization and embolisation
- Emeritus
- Enmity vs animosity
- Ensconce vs sconce
- Entree vs entrée
- Epidemic vs pandemic
- Ergonomics
- Erupt vs irrupt
- Eschew
- Esoteric vs archaic
- Especial
- Estimation or approximation
- Evidence vs evince
- Excelsior and wood wool
- Expose vs exposé
- Fabulist
- Factious vs facetious
- Factotum
- Fairy-tale ending
- Fantods
- Faro, farrow or pharaoh
- Faux-naïf
- Feckless
- Ferment or foment
- Festivus
- Fete
- Fiefdom
- Fifth column
- Filibuster
- Finite verb
- Firebrand
- Firefight
- Firefly and lightning bug
- Fireplace vs hearth
- First aid
- Flagship
- Flash mob
- Flip one's lid vs. flip one's wig
- Flummox
- Fluorescent vs incandescent
- Foist
- Folderol
- Foley
- Font vs fount
- Fool's errand
- Foot long
- For the birds
- Formulas vs formulae
- Fraud or defraud
- Fraught
- Freegan and freeganism
- Freeze vs frieze
- Frenemy
- Freudian slip
- Friendsgiving
- Frogmarch or frog-march
- Fuddle
- Funereal
- Fusion vs confusion
- Futz vs putz
- Gadfly
- Gaiety or mirth
- Gainsay
- Gallimaufry
- Gallop vs Gallup
- Galore
- Galumph
- Game changer
- Gastropub
- Gavel-to-gavel
- Genericide
- Gentrification
- Geographic vs geographical
- Geronimo!
- Gerrymander
- Gestalt
- Gibberish
- Glad-hand
- Glamping
- Glass ceiling
- Glitch
- Gobsmacked
- Going viral
- Goldbrick
- Golden ticket
- Goober
- Goodly
- Google vs google
- Goose-step
- Goosebumps, goose pimples and gooseflesh
- Gorp
- Gourmet vs gourmand
- Graffiti
- Grammarist
- Grandfather (as a verb)
- Greenhorn vs tinhorn
- Grinch
- Grok
- Gross vs net
- Groupthink
- Grub
- Gruel vs grueling
- Gumption
- Gun-shy
- Guyline vs guideline
- Halcyon
- Half-baked
- Halfhearted and half-hearted
- Halloween or Hallowe'en
- Halve vs have
- Hangdog
- Hanky-panky
- Happy camper
- Harbinger
- Harridan and harpy
- Hate-watch
- Haymaker
- Hector
- Helpless vs hapless
- Helter skelter or helter-skelter
- Henpeck
- Heretofore or hitherto
- Heyday
- Hieroglyph vs hierograph
- Highfalutin
- Hinky
- Hoax
- Hobo, tramp, bum, or gutter punk
- Hobson's choice
- Hocus-pocus
- Hoi polloi
- Hokey-pokey, hokey-cokey and hokey-tokey
- Holier-than-thou
- Honcho
- Honeymoon
- Hoodwink
- Hoosegow
- Hootenanny
- Hope or hopes
- Horn of plenty and cornucopia
- Hosanna
- Hot button
- Houndstooth
- How's it going
- Hubris
- Hullabaloo
- Humdinger
- Hunt-and-peck
- Hurricane, typhoon and cyclone
- Hush puppy, hushpuppy or hush-puppy
- Hustle and side hustle
- Hygge
- Ibid vs idem
- Ideologue
- Idiot savant or savant syndrome
- Ignoramus
- Imaginary or imaginative
- Imbroglio
- Impromptu or improvised
- Improvise vs. improvize
- Incase or encase
- Incommunicado
- Incomprehensive or incomprehensible
- Inculcate
- Indemnity and contribution
- Indian corn
- Indian summer
- Infomercial
- Inroad vs inroads
- Intellectual property
- Interrobang and interabang
- Invite (as a noun)
- Irk
- Itchy feet
- Jack-in-the-box
- Jack-o’-lantern and Halloween lantern
- Jackpot
- Jaded
- Janus-faced
- Jaywalking
- Jejune
- Jejune
- Jeremiad
- Jet lag
- Jig vs gig
- Jiggery-pokery
- Jingoism
- Jinx
- Jitney
- John Doe, Joe Bloggs and Fred Nerk
- Jolly Roger
- Jones
- Joshing
- Juggalo
- Juxtapose
- K-pop
- Kakistocracy
- Kaleidoscope
- Kerfuffle vs brouhaha
- Kibosh
- Kick-start
- King's X
- Kith and kin
- Kleenex vs tissue
- Kludge
- Koan vs cone
- Kryptonite
- Lackadaisical
- Ladybug and ladybird
- Lagniappe
- Landlubber
- Last-ditch
- Latchkey kid and latchkey child
- Later vs latter
- Latte art
- Laughing stock
- Leaned or leant
- Leery vs leary
- Leet, leetspeak and 1337
- Leeway
- Legal tender
- Legal vs legit
- Legitimate vs legitimitize
- Lei
- Leotard vs tights
- Leviathan
- Lickety-split
- Lifetime or life time
- Lilliputian
- Limbo
- Limelight vs spotlight
- Lip-sync and lip-synch
- Listserv
- Logo
- Long in the tooth
- Long johns vs union suit and combination suit
- Long pig
- Loonie or loony
- Loop de loop or loop the loop
- Loophole
- Loquacious
- Lothario
- Luddite
- Lukewarm
- Lyme disease vs lime disease
- Macabre
- MacGyver
- Malarkey
- Marsala vs masala
- Mary Sue
- Maverick
- McGuffin
- Mcjob
- Meme
- Meretricious vs meritorious
- Merry Christmas vs Happy Christmas
- Meta
- Mic drop
- Microfinance, microcredit and microloan
- Militant or terrorist
- Militate or mitigate
- Milquetoast vs milktoast
- Misogyny and misandry
- Mixtape
- Mob or demob
- Mogul
- Mojo
- Mollycoddle
- Momager
- Montage
- Moonlight
- Moonshine
- Moratorium
- More vs moor
- Moribund
- Mortar board
- Mothball
- Muckamuck, mucky-muck and muckety-muck
- Muckraking
- Mumbo jumbo
- Namby-pamby
- Nano-
- Nascent
- Nativity
- Ne'er-do-well
- Nefarious
- Nepotism
- Nerd, dork or geek
- Nest egg
- Newfangled
- Nib vs nub
- Nickle-and-dime
- Nickname
- Niggle
- Nitpick
- Nitty-gritty
- No-brainer
- Noble vs ignoble
- Noel or nowel
- Nomenclature
- Nowadays, anymore, or any more
- Nullify
- Nutriment or nutrition
- Oases
- Oblique
- Obsequious
- Off-kilter and out of kilter
- Old chestnut
- Old Glory
- Oligarchy vs monarchy
- One-horse town
- Onomatopoeia
- Onus
- Oompa Loompa
- Operationalise or operationalize
- Origin or origins
- Ornery
- Ought vs aught
- Overtake, take over and takeover
- Packed vs pact
- Panhandle
- Parade float
- Paralympics
- Paraphernalia
- Parkour
- Parsimony
- Passerbys or passersby
- Passing strange
- Patois
- Patriot
- Patsy
- Patsy
- Paucity
- Pay the piper
- Pearl vs purl
- Peccadillo
- Peckish
- Pejorative
- Pell-mell
- Penny-pinching
- Pentagon
- Penultimate
- Peripatetic
- Perjury
- Pet peeve
- Pettifogger
- Petulant vs impetuous
- Philippic
- Phosphene
- Photobomb
- Phubbing
- Picayune
- Pidgin vs pigeon
- Piecemeal
- Piggy bank
- Piggyback
- Pin money
- Piping hot
- Pissant
- Pitchblende
- Pithy
- Pixelated vs. pixilated
- Plainclothes
- Plaintiff vs defendant
- Platypi vs platypuses
- Pleather and Naugahyde
- Point-blank
- Poker face
- Polka dot
- Pollyanna
- Ponzi scheme and Ponzi game
- Pooh-bah or poobah
- Pooped
- Popinjay
- Poppycock
- Port vs. starboard
- Post-truth
- Potluck
- Potter's field
- Pragmatism
- Pram, baby carriage and baby buggy
- Primal scream
- Private eye and gumshoe
- Privy
- Procrastinate
- Prodigal and prodigy
- Prodigious vs prolific
- Progeny vs prodigy
- Promulgate vs propagate
- Propitiate vs expiate
- Protean vs protein
- Proverb vs adage
- Proverbial vs figurative
- Proviso
- Proximal vs proximate
- Psychopath vs. sociopath
- Pugnacious
- Punch list
- Pundit
- Puppy love or poppy love
- Pusillanimous
- Qua
- Quaff vs coif
- Quality time
- Quantum
- Quay
- Quicksilver
- Quire vs choir
- Quisling
- Raconteur
- Radical
- Rambunctious
- Ramshackle
- Rat race
- Raven vs ravenous
- Razzle-dazzle and razzmatazz
- Razzmatazz or razzamatazz
- Reconnoiter
- Red-letter day
- Redneck vs hick vs hillbilly
- Referendum
- Reforested wood
- Reindeer or caribou
- Renege vs rescind
- Repair vs reparation
- Repetition vs repetitiveness
- Requiem
- Retcon
- Retrograde vs anterograde or antegrade
- Riffraff
- Rigmarole
- Riposte vs repost
- Risky vs risqué
- Road kill or roadkill
- Robot, android or droid
- Roman-à-clef
- Rookie
- Round robin
- Royal "we"
- Rubberneck
- Rubenesque
- Rummy
- Sachet vs sashay
- Sacred cow
- Said the actress to the bishop
- Salient vs salience
- Salubrious vs lugubrious
- Samovar vs scimitar
- Sanction
- Sangfroid
- Sarcasm
- Sarcophagus vs mausoleum
- Satisficing vs satisfying
- Savvy
- Scatological
- Scavenger hunt
- Schadenfreude
- Schema or schematic
- Schizophrenia as an adjective
- Schmooze and shmooze
- Schmuck versus putz
- Scintilla
- Scion
- Scot-free
- Screed
- Screwball
- Scrumdiddlyumptious
- Scrummy
- Scuba
- Scuffle
- Sculpture vs sculptor
- Scuttlebutt
- Second-guess
- Security blanket
- Segue vs Segway
- Self vs self
- Sensational vs sensationalistic
- Sentient
- Sequacious
- Seraphic
- Serigraph vs lithograph
- Serviette or napkin
- Shaggy-dog story
- Shanghai (as a verb)
- Shenanigans
- Shiplap
- Shiv
- Shop till you drop
- Shopping cart or buggy
- Shotgun vs rifle
- Showboat
- Shrinking violet
- Signet vs cygnet
- Silver lining
- Silviculture
- Sine die
- Sisyphean, Promethean or Herculean
- Skein vs scan
- Skort
- Skulduggery
- Skunkworks
- Sled, sledge, sleigh and toboggan
- Slipshod
- Slow vs sloe
- Slumgullion and goulash
- Smarmy
- Smartphone vs smart phone
- Smithereens
- Snitch
- Snobbery or snobbishness
- Sob sister and sob story
- Social vs sociable
- Sorbet
- SOS and Mayday
- Sound bite
- Spanish fly
- Spartan
- Spearhead
- Spiel
- Spiffy
- Spoof
- Spoonerism vs malapropism
- Spork
- Squinch
- Star-crossed
- Stat vs now
- Staycation
- Steal vs steel
- Stigma, stigmas or stigmata
- Stir-crazy
- Stool pigeon
- Stroller or pushchair
- Sty vs stye
- Sub rosa vs sub-rosa
- Sub vs infra
- Subtext
- Sugar daddy
- Sunday driver
- Super vs supra
- Supercilious
- Supersede or supercede
- Surgeon vs sturgeon
- Surrogacy
- Suspect, person of interest or perpetrator
- Swanning around and swanning about
- Swashbuckle
- Sweeped or swept
- Sweet tooth
- Sycophant
- Symbol vs cymbal
- Synchronise or synchronize
- Systematic vs systematical
- Tabula rasa
- Tad bit vs tidbit
- Take the mickey out of someone
- Tar baby
- Taro vs tarot
- Taser
- Tattletale vs telltale
- Teetotaler, teetotaller
- Terra firma
- Terrific vs terrifying
- Terroir and terror
- Thanksgiving or Thanksgiving Day
- Thesauri or thesaurusus
- Thong or flip-flop
- Thrall
- Threshold or threshhold
- Through and through or thru and thru
- Throw the baby out with the bathwater
- Thumbs up and thumbs down
- Tiddlywinks and tiddleywinks
- Tinseltown
- Tiny house and tiny home
- Titular
- Tmesis
- Tontine
- Tool vs tulle
- Top banana and second banana
- Toss-up
- Touche or touché
- Tough vs tuff
- Toweled or towelled
- Towhead
- Track and field and athletics
- Tragedy vs travesty
- Trainer or trainor
- Treacle
- Triage
- Trick or treat vs trick-or-treat
- Troglodyte
- Troika
- Tsunami vs tidal wave
- Turducken
- Turnkey vs turn key
- Turpitude vs turpentine
- Tween
- Ubiquitous
- Umbrage
- Unawares
- Underdog
- Underlie or underline
- Unexceptionable vs unexceptional
- Unfamous or infamous
- Union Jack
- Unsung hero
- Untoward
- Upper crust
- Urban, suburban and rural
- Vagabond and vagrant
- Variety vs varietal
- Vaudeville
- Verklempt
- Vertigo vs vertiginous
- Vested
- Vicissitude
- Voluptuous vs voluminous
- Vox populi
- W00t
- Wainscot or chair rail
- Wallflower
- Wallop and pack a wallop
- Wassail
- Weekend
- Wheelhouse
- Wherewithal
- Whig vs wig
- Whippersnapper
- Whipsaw
- Whoa vs woe
- Wiki
- Willy-nilly
- Wiseacre
- Womp womp
- Woolgathering
- Worrywart and worryguts
- Writer's block
- Wrote vs rote
- Xmas
- Y'all vs yawl
- Yarn-bomb
- Yester
- Yiddish
- YOLO
- Yuletide
- Zigzag