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English definition of “know sth back to front”

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know sth back to front

( UK also know sth backwards, US also know sth backward(s) and forward(s)) informal
to have very good and detailed knowledge of something: She knows her part in the play back to front.
Translations of “know sth back to front”
in Chinese (Traditional) 熟諳, 對…瞭如指掌…
in Chinese (Simplified) 熟谙, 对…了如指掌…
(Definition of know sth back to front from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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