Meaning of “forget” in the English Dictionary

"forget" in British English

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forgetverb

uk /fəˈɡet/ us /fɚˈɡet/ present participle forgetting, past tense forgot, past participle forgotten

forget verb (NOT REMEMBER)

B1 [ I or T ] to be unable to remember a fact, something that happened, or how to do something:

I'm sorry, I've forgotten your name.
Let me write down that date before I forget it.
I completely forgot about Jenny's party.
[ + (that) ] We had forgotten (that) she doesn't come on Thursdays.
I'm sorry, I was forgetting (= I had forgotten) (that) you would be away in August.
[ + -ing verb ] She would never forget seeing the Himalayas for the first time.
[ + question word ] I've forgotten what you do next/how to do it.
I never forget a face (= I'm good at remembering people).
not forgetting

UK including:

This is where we keep all the books, not forgetting the magazines and newspapers.

More examples

  • I'll write it down now so I won't forget.
  • We left in such a hurry that we forgot our tickets.
  • I feel so guilty about forgetting her birthday.
  • I want to forget the whole thing.
  • It's either Spanish or Portuguese that she speaks, but I've forgotten which.

forget verb (NOT DO)

A1 [ I + to infinitive, T ] to not remember to do something:

Don't forget to lock the door.
Dad's always forgetting (to take) his pills.

More examples

  • Don't forget to claim (for) your travelling expenses after the interview.
  • Don't forget to feed the tomatoes.
  • Some prize idiot forgot to lock the door.
  • He had forgotten to plug the television into the mains socket.
  • He raged at us for forgetting to order a replacement.

forget verb (NOT BRING)

A2 [ T ] to not bring something with you because you did not remember it:

I forgot my keys.

More examples

  • When he got to the airport he found he'd forgotten his passport.
  • I then realized to my absolute horror, that I had forgotten the present.
  • I've forgotten my umbrella - what a nuisance!
  • I realized too late that I'd forgotten the tickets.
  • I've forgotten my door-keys - we'd better try the window .

(Definition of “forget” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"forget" in American English

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forgetverb [ I/T ]

us /fərˈɡet, fɔr-/ present participle forgetting, past tense forgot /fərˈɡɑt, fɔr-/ , past participle forgotten /fərˈɡɑt·ən, fɔr-/ forgot

to be unable to remember; fail to remember:

[ T ] You’d better not forget your mother’s birthday.
[ + (that) clause ] She forgot (that) she had a dental appointment.
[ + to infinitive ] Don’t forget to lock the car.

To forget (about) is to stop thinking about someone or something, or to stop thinking about doing something:

[ T ] I wish I could forget him but I can’t.
[ I ] I’m afraid we’ll have to forget about going to the beach – it’s raining.

(Definition of “forget” from the Cambridge Academic Content Dictionary © Cambridge University Press)