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90% of the time, speakers of English use just 7,500 words in speech and writing. These words appear in red, and are graded with stars. One-star words are frequent, two-star words are more frequent, and three-star words are the most frequent.
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I could hear someone turning the key in the lock.
a bunch of keys
Where's the key to the back door?
Proper planning is the key to success.
The key to our strength lies in our members.
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a major/minor key
in the key of D sharp
This is the British English definition of key. View American English definition of key.
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View the pronunciation for key.
American English version of definition of key
the design of buildings or public spaces in a way which discourages people from touching, climbing or sitting on them …
to ask people to vote in order to decide an issue
a situation in which a country's armed forces are physically present in an area of conflict …
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Definition of key from the online English dictionary from Macmillan Publishers Limited.