Meaning of “sleep through sth” in the English Dictionary

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"sleep through sth" in British English

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sleep through sth

phrasal verb with sleep uk /sliːp/ us /sliːp/ verb slept, slept

If you sleep through a lot of noise or an activity, it does not wake you or keep you awake:

I never heard the storm last night - I must have slept through it.
I was so bored that I slept through the second half of the film.

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