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key

[kee] / ki /


NOUN
item that unlocks
Synonyms
Antonyms




Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

It suited the structure of the book — the key incidents fitted perfectly — but I hope more than that it allowed us to care about the boys.

From Los Angeles Times • Jun. 9, 2026

The U.S. withdrawal from international agencies and the strain USAID’s end put on surveillance and response systems were key to allowing Ebola to spread unchecked, several experts told me.

From Slate • Jun. 9, 2026

A key commercial partner no longer has a functioning launch pad.

From BBC • Jun. 9, 2026

Although, Europe’s gas stocking demand will likely be a key support for both LNG and coal prices in the coming months, he adds.

From The Wall Street Journal • Jun. 9, 2026

Still without a word, she halted in front of another door and opened it with a key.

From "The Hiding Place" by Corrie ten Boom




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