key word

noun

: a word that is a key: such as

a

usually keyword

ˈkē-ˌwərd 

: a significant word from a title or document used especially as an index to content

b

: a word exemplifying the meaning or value of a letter or symbol

Examples of key word in a Sentence

Recent Examples on the Web

Service Buttoned up bellman bound through the lobby; Grand is indeed the key word when describing its size, and as such, guests may not get the personalized attention to detail of a smaller property. — Condé Nast, Condé Nast Traveler, 25 Aug. 2026

The key word there is possible, which bumps up against its twin, impossible. — Neil Senturia, San Diego Union-Tribune, 3 Aug. 2026

Check Your Make and Model While pre-rinsing isn’t necessary for most dishwashers, Cohoon points out that the key word here is most. — Ashley Chalmers, The Spruce, 25 July 2026

Dead maybe was the key word as sleep deprivation can be fatal. — Marisa Meltzer, Vanity Fair, 17 July 2026

Word History

First Known Use

1762, in the meaning defined above

Rhymes for key word

• absurd
• averred
• bluebird
• byword
• catbird
• catchword
• concurred
• conferred
• cowbird
• cowherd
• crossword
• deferred

Kids Definition

keyword

noun

key·​word

-ˌwərd

: a word of interest or significance