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key

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

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

Digital room keys were deactivated, locking some customers out of their rooms with their belongings inside.

Mr Koike said Rapidus's key selling point would be - as its name suggests - an ability to produce custom chips faster than competitors, rather than competing directly with other players.

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The centre's player-of-the-match performance showed off his polished all-round game, with his fast feet, deft boot and soft hands playing key roles in England's three tries.

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Both Italy and Spain reached the final despite missing key players, with the absence of Carlos Alcaraz and Jannik Sinner denying fans a seventh meeting of 2025 between the world's dominant men's players.

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The document also addresses key European interests, including the need to use immobilized Russian central bank assets held in Europe to support Ukraine and its recovery.

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

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