key word

noun

: a word that is a key: such as
a
usually keyword : 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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Oliver gives Lilly some key words that make her second-guess the plan. Samantha Agate, Fort Worth Star-Telegram, 25 Mar. 2026 Oliver gives Lilly some key words that force her to second-guess her decision. Samantha Agate, Miami Herald, 25 Mar. 2026 The key word here, however, is independent. Jenisha Watts, The Atlantic, 23 Mar. 2026 For the Rangers, that may be the key word to the 2026 season. Evan Grant, Dallas Morning News, 23 Mar. 2026 See All Example Sentences for key word

Word History

First Known Use

1762, in the meaning defined above

Time Traveler
The first known use of key word was in 1762

Browse Nearby Words

Cite this Entry

“Key word.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/key%20word. Accessed 30 Mar. 2026.

Kids Definition

keyword

noun
key·​word
-ˌwərd
: a word of interest or significance
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