The word double-check has been in use since the mid-1900s, though its origin is uncertain. We will examine the definition of the word double-check, where it came from and some examples of its use in sentences.

To double-check means to review something twice, to be sure that no mistakes have been made. When accuracy is extremely important, one may be asked to triple-check data. However, triple-check is not currently a word recognized by the Oxford English Dictionary. Double-check is a hyphenated compound word, which is a term composed of two words joined together by a hyphen. Double-check is a transitive verb, which is a verb that takes an object. Related words are double-checks, double-checked, double-checking. Note that double-check is correctly rendered with a hyphen, though the term is also seen as two separate words, as in double check. The word double-check first appeared in the middle of the twentieth century, perhaps a term that migrated from military parlance into the general population.


“When I walked in, I had to double-check that I was in the same place,” the 35-year-old Clintonville resident said of his visit last month. (The Columbus Dispatch)

An insurance broker also may be able to double-check the claim’s accuracy or check for any potential discounts. (The Detroit News)

Nothing was thought to be wrong, Marciano said, but Mayor Joseph J. Solomon, who took office in May after Scott Avedisian resigned office, hadn’t been mayor for the preparation and wanted things double-checked. (The Providence Journal)

“It is sometimes that we forget that the human touch might need to be relied on to double check and things have always ought to build into it somewhere some sort of a safety check.” (The Lowestoft Journal)