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

Not since early Vanderpump Rules have we been so blessed by morally bankrupt individuals being so willing to televise their cheating (key word being willing). — Tom Smyth, Vulture, 10 Sep. 2026

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

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