English Dictionary
Definition key in British English
key
noun
What are red words?
Around 90% of spoken and written English relies on just 7,500 common words.
These words are highlighted in red and are ranked using a star system.
- One-star words are commonly used
- Two-star words are even more common
- Three-star words are the most frequently used
[countable]
noun
What are red words?
Around 90% of spoken and written English relies on just 7,500 common words.These words are highlighted in red and are ranked using a star system.
- One-star words are commonly used
- Two-star words are even more common
- Three-star words are the most frequently used
/kiː/
1
a small piece of metal used for opening or locking a door or a container, or for starting the engine of a vehicle
Example
Where's the key to the back door?
Synonyms and related words
Example
in the key of D sharp

Related Words
Words related to key:
Allen key (noun)
Alt key (noun)
arrow key (noun)
command key (noun)
control key (noun)
delete key (noun)
enter key (noun)
escape key (noun)
function key (noun)
hold the key (to something) (phrase)
hot key (noun)
key (noun)
key (adjective)
key (verb)
key account (noun)
key card (noun)
key chain (noun)
key in (phrasal verb)
key performance indicator (noun)
key ring (noun)
key signature (noun)
key to (phrasal verb)
key-person insurance (noun)
lock (noun)
low-key (adjective)
master key (noun)
off-key ()
pass key (noun)
pound key (noun)
private key cryptography (noun)
return key (noun)
shift key (noun)
skeleton key (noun)
star key (noun)
tab key (noun)
under lock and key (phrase)