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Definitions

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.

That’s key; it means these companies, theoretically, are under-earning relative to their potential—and appear positioned to deliver enough pricing power to offset any rising product costs.

From Barron's • Jun. 9, 2026

The letter highlighted key sectors - shipbuilding, steel, AI and energy infrastructure - where the government will focus on British investment.

From BBC • Jun. 9, 2026

The key to how the Fed thinks about the CPI report will depend on the details.

From MarketWatch • 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

Chase swung on first, turned the key, then pushed the ignition switch.

From "Storm Runners" by Roland Smith




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