'
- 'L', L, el (Chicago trains)
A
- A cappella
- A lot vs. alot
- Abetter vs. abettor
- Abstracter vs. abstractor
- Acknowledgement vs. acknowledgment
- Ad vs. add
- Adapter vs. adaptor
- Adviser vs. advisor
- Aeon vs. eon
- Aether vs. ether
- Ageing vs. aging
- Aid vs. aide
- Aisle vs. isle
- All together vs. altogether
- Already vs. all ready
- Altar vs. alter
- Aluminium vs. aluminum
- Ambiance vs. ambience
- Amok vs. amuck
- Analog vs. analogue
- Analyse vs. analyze
- Annex vs. annexe
- Anytime vs. any time
- Apologise vs. apologize
- Appal vs. appall
- Archaeology vs. archeology
- Arctic, Antarctic
- Armor vs. armour
- Artefact vs. artifact
- Auger vs. augur
- Aural vs. oral
- Authorise vs. authorize
- Awhile vs. a while
- Ax vs. axe
- Axel vs. axle
B
- Back seat vs. backseat
- Backyard, back yard, back-yard
- Bail vs. bale
- Bailout, bail out, and bail-out
- Bait vs. bate
- Barbecue vs. barbeque
- Barbed wire
- Bare vs. bear
- Behavior vs. behaviour
- Bight vs. bite
- Blessed vs. blest
- Bloc vs. block
- Blowout vs. blow out
- Blowup vs. blow up
- Bore, boor, boar
- Borne vs. born
- Borough, burro, burrow
- Breastfeeding, breastfed, breastfeed, etc.
- Breath vs. breathe
- Bright vs. brite
- Brussels sprout
- Bulk, balk, baulk
- Bus stop vs. busstop
- Buses vs. busses
C
- Caddie vs. caddy
- Caliber vs. calibre
- Canceled vs. cancelled
- Canon vs. cannon
- Capiche, capeesh, capische, etc
- Catalog vs. catalogue
- Center vs. centre
- Cession vs. session
- Check in vs. check-in (vs. checkin)
- Check up vs. checkup
- Check vs. cheque
- Checkout vs. check out
- Chic vs. sheik
- Childcare, child care, child-care
- Chili vs. chilly
- Chute vs. shoot
- Close-minded vs. closed-minded
- Coarse vs. course
- Coliseum vs. colosseum
- Color vs. colour
- Connexion
- Cooperate vs. co-operate
- Coral vs. corral
- Cord vs. chord
- Cosy vs. cozy
- Council vs. counsel
- Counselor vs. counsellor
- Crier vs. cryer
- Crumby vs. crummy
- Curb vs. kerb
- Customise vs. customize
D
- Dam vs. damn
- Dead set, dead-set, deadset
- Decent vs. descent
- Defence vs. defense
- Dependant vs. dependent
- Derring-do
- Dike vs. dyke
- Dis vs. diss
- Disc vs. disk
- Dispatch vs. despatch
- Dole out vs. doll out
- Doughnut vs. donut
- Douse vs. dowse
- Draft vs. draught
- Dual vs. duel
- Dyeing vs. dying
E
- E. coli
- Eek vs. eke
- Elicit vs. illicit
- Enamor vs. enamour
- Enclose vs. inclose
- Engrain vs. ingrain
- Enquire vs. inquire
- Enrol vs. enroll
- Envelop vs. envelope
- Envision vs. invision
- Envoi vs. envoy
- Ere vs. err
- Exploitative vs. exploitive
F
- Faun vs. fawn
- Favor vs. favour
- Favorite vs. favourite
- Fiber vs. fibre
- Flack vs. flak
- Flavor vs. flavour
- Flier vs. flyer
- Flu vs. flue
- For God's sake
- Foreword vs. forward
- Forty vs. fourty
- Foul vs. fowl
- Free rein vs. free reign
- Freshwater vs. fresh water
- Fueled/fueling vs. fuelled/fuelling
- Fulfil vs. fulfill
G
- Gaol vs. jail
- Gaudy vs. gawdy
- Gaveled vs. gavelled
- Gild vs. guild
- Glamour vs. glamor
- Gofer vs. gopher
- Gorilla vs. guerrilla
- Gray vs. grey
- Grisly vs. grizzly
H
- Hairbrained vs. harebrained
- Hallow vs. hollow
- Hara-kiri
- Harbor vs. harbour
- Hark, harken, and hearken
- Heal vs. heel (and bring to heel)
- Healthcare vs. health care
- Hear, hear vs. here, here
- Heighth
- Highfalutin
- Hoard vs. horde
- Holey vs. holy
- Home school vs. homeschool (vs. home-school)
- Honor vs. honour
- Horsey, horsy, horsie
- Humor vs. humour
- Humus vs. hummus
- Hurdle vs. hurtle
I
- Ice tea vs. iced tea
- Idle, idol, idyll
- Imposter vs. impostor
- Incidence vs. incidents
- Inclement vs. inclimate
- Installment vs. instalment
- Intact
- Its vs. it's
J
- Jewelry vs. jewellery
- Judgment vs. judgement
- Junkie vs. junky
- Just deserts vs. just desserts
K
- Ketchup, catsup, catchup
- Kick off vs. kickoff (vs. kick-off)
L
- Labeled vs. labelled
- Labor vs. labour
- Lambast vs. lambaste
- Lasagna vs. lasagne
- Lay out vs. layout
- Leaped vs. leapt
- Learned vs. learnt
- Led vs. lead
- Leftover vs. left over
- Levee vs. levy
- Liar vs. lier
- Licence vs. license
- Licorice vs. liquorice
- Lieutenant
- Lightening vs. lightning
- Likable vs. likeable
- Linchpin vs. lynchpin
- Liter vs. litre
- Loath vs. loathe (vs. loth)
- Log in vs. login
- Look out vs. lookout (vs. look-out)
- Lovable vs. loveable
M
- Macintosh, mackintosh, McIntosh
- Maneuver vs. manoeuvre
- Mantel vs. mantle
- Marry vs. merry
- Marshal vs. martial
- Math vs. maths
- Mayonnaise vs. mayonaise
- Meager vs. meagre
- Medal, meddle, metal, mettle
- Metaphoric vs. metaphorical
- Meter vs. metre
- Mic vs. mike
- Midrift (midriff)
- Minuscule vs. miniscule
- Mischievous vs. mischievious
- Modeling vs. modelling
- Mold vs. mould
- Mollusc vs. mollusk
- Molt vs. moult
- Mother lode
- Moustache vs. mustache (vs. mustachio)
- Movable vs. moveable
- Mucous vs. mucus
- Muumuu
N
- Neandertal vs. neanderthal
- Neighbor vs. neighbour
- No one vs. noone (vs. no-one)
O
- Ocher vs. ochre
- Odor vs. odour
- Offence vs. offense
- OK vs. okay
- Omelet vs. omelette
- One-time vs. onetime
- Oneself vs. one's self
- Online vs. on-line
- Opossum vs. possum
- Organise vs. organize
- Over- and under- (prefixes)
- Overdo vs. overdue
P
- Paid vs. payed
- Pair vs. pare vs. pear
- Pajamas vs. pyjamas
- Palate, palette, pallet
- Pale in comparison
- Paralyse vs. paralyze
- Peak vs. peek vs. pique
- Peal vs. peel
- Percent vs. per cent
- Phosphorous vs. phosphorus
- Photo shoot vs. photoshoot
- Pickup vs. pick up (vs. pick-up)
- Pixelated vs. pixilated
- Plateaus vs. plateaux
- Playwright vs. playwrite
- Plough vs. plow
- Plum vs. plumb
- Pompom vs. pompon (vs. pom-pom etc.)
- Populace vs. populous
- Pore over vs. pour over
- Practice vs. practise
- Pray vs. prey
- Pretence vs. pretense
- Preventative vs. preventive
- Principal vs. principle
- Program vs. programme
- Putrefaction
R
- Racket vs. racquet
- Rappel vs. repel
- Re-create vs. recreate
- Real-time vs. real time
- Realise vs. realize
- Recent vs. resent
- Remunerate vs. renumerate
- Restaurateur vs. restauranteur
- Retch vs. wretch
- Review vs. revue
- Ring vs. wring
- Rivaled/rivaling vs. rivalled/rivalling
- Rock 'n' roll, rock and roll, rock'n'roll, etc.
- Rogue vs. rouge
- Role vs. roll
- Rumor vs. rumour
S
- Saccharin vs. saccharine
- Sacrilege, sacrilegious
- Saltwater vs. salt water
- Sanitise vs sanitize
- Savanna vs. savannah
- Savior vs. saviour
- Sceptic vs. skeptic
- Sear vs. seer vs. sere
- Set up vs. setup
- Sew vs. sow
- Sharable vs. shareable
- Shear vs. sheer
- Shellac, shellack
- Sherbert vs. sherbet
- Shoo-in
- Shriveled/shriveling vs. shrivelled/shrivelling
- Sight vs. site
- Silicon vs. silicone
- Skilful vs. skillful
- Smelled vs. smelt
- Somber vs. sombre
- Somersault
- Soup up
- Specter vs. spectre
- Spelled vs. spelt
- Stained glass
- Storey vs. story
- Strait-laced
- Straitjacket
- Subtle vs. subtil
- Sulfur vs. sulphur
- Summary vs. summery
- Supposed to
T
- T-shirt, t-shirt, tee-shirt, tee shirt
- Tail vs. tale
- Take over vs. takeover
- Teeth vs. teethe
- Tenant vs. tenet
- Theater vs. theatre
- Their, there, they're
- Threw vs. through
- Through vs. thru
- Tidbit vs. titbit
- Timber vs. timbre
- Timeout vs. time out
- Timpanum, timpani, tympanum, tympani
- Tire vs. tyre
- Ton vs. tonne
- Totaled/totaling vs. totalled/totalling
- Toward vs. towards
- Traveled/traveling vs. travelled/travelling
- Treasurys
- Tumor vs. tumour
- Tunneled, tunneling vs. tunnelled, tunnelling
U
- Underwater vs. under water
- Underway vs. under way
V
- Vain, vein, and vane
- Valentine's Day
- Vice vs. vise
- Vicious vs. viscous
- Voicemail
- Voilà
W
- Wack vs. whack
- Wagon vs. waggon
- Waist vs. waste
- Warrantee vs. warranty
- Web site vs. website
- Well-being vs. wellbeing
- Whiz, whizz, wiz
- Wilful vs. willful
- Wintery vs wintry
- Woolen vs. woollen
- Wreath vs. wreathe
- Write-off vs. write off
Y
- Yoghurt vs. yogurt
- Your vs. you're
