could

UK
/kʊd/
US
/kʊd/
couldverb
UK
/kʊd/
US
/kʊd/
(modal; past form of can)
Definitions
Used to make a polite request.
Could you pass me the paper?
Used to make an assumption.
You could be right, but we need to doublecheck everything.
Synonyms
was able to
were able to
might be able to
was capable of
had the ability to
managed to
would be able to
had the capacity to
canverb

could

Past Simple

could
Past Simple
been able to
Past Participle
UK
/kæn/
US
/kæn/
(modal / non-modal)
Definitions
To be able to do something (auxiliary).
She can swim across the lake without stopping.
To have the opportunity or possibility to do something (auxiliary).
We can go to the park if it stops raining.
To preserve food by sealing it in airtight containers.
They can tomatoes every summer to enjoy them in the winter.
To dismiss someone from a job.
The company decided to can several employees due to budget cuts.
Synonyms
be able to
be capable of
have the ability to
be permitted to
know how to
cannoun
Definitions
A cylindrical metal container used for storing food or drink.
She opened a can of soup for lunch.
A container for holding or carrying liquids, typically made of metal and equipped with a handle and a spout.
He filled the watering can to water the plants.
A slang term for a toilet.
He excused himself to use the can.
A slang term for a jail or prison.
He spent a night in the can for disorderly conduct.
A film or tape reel container.
The director stored the film in a can for safekeeping.