Definition for key

adjective as in essential, important

noun as in item that unlocks

noun as in answer, solution

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Example Sentences

Some former and current officials say they do not think ex-Washington officials will move many voters in key states.

The latest decision is another blow to the third-party ticket and a win for Democrats, who worried that the Green Party could siphon votes from presidential nominee Joe Biden in the key battleground state.

In two cases, key reports were delayed, with officials suggesting their timing was for political reasons.

Nadia will play a key role in that, both for Slack and for our customers.

From Fortune

With the pandemic still raging, key voters may not be willing to change the subject.

Getting men to do their share of care and domestic work is a key overlooked strategy in reducing poverty.

By contrast, Solomon can tell us a great deal about what really changed the country—because at key moments, he was there.

The second lesson is that no one writing before the twentieth century holds a key to our problems.

As with so many things, keeping screen time in moderate amounts seems key.

The opposition responded with a month-long Occupy Abay (like Occupy Wall St) campaign, in which Udaltsov was one of key figures.

Mr. Jones swung round a large iron key he held in his hand, and light dawned upon him.

Mr. Collingwood, taking the key from his mother, locked the little door in the boarding, after them.

About her neck was hung a covered basket and a door-key; and Davy at once concluded that she was Sindbad's house-keeper.

The girl smiled, and drew out a large key, and nodded, still smiling as she replaced it.

The friends were standing close to the wall; but on these sounds they moved away; and a key presently turned in the door.


On this page you'll find 122 synonyms, antonyms, and words related to key, such as: basic, crucial, decisive, fundamental, indispensable, and leading.

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.