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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.

Grimes added citizen scientists in Plymouth and surrounding areas "can help overcome a key challenge in urban micrometeorite research, accessing multiple sample sites and processing material to build a national archive".

From BBC • Apr. 4, 2026

She didn’t specify what mistake she made but said her apology was a key step in continuing to build trust with this team.

From Los Angeles Times • Apr. 4, 2026

Most loans carry floating rates tied to SOFR, the key short rate benchmark, with an average margin of about five percentage points.

From Barron's • Apr. 4, 2026

It has also carried out strikes on luxury hotels, radar installations, energy facilities in multiple countries, key ports, U.S. embassies across the region, and even Amazon data centers.

From The Wall Street Journal • Apr. 4, 2026

He was a key and a glass portal away from being closer to seeing Pili again.

From "The Way to Rio Luna" by Zoraida Cordova