know something backwards

Alternative forms

know backward and forward, know backwards and forwards (US)
know back to front (US and UK)

Etymology

Suggesting such familiarity with something that one could recite or list it even in reverse order.

Pronunciation

Audio (US): (file)

Verb

know backwards (third-person singular simple present knows backwards, present participle knowing backwards, simple past knew backwards, past participle known backwards)

(UK, transitive) To have very thorough knowledge of.

Synonyms

know inside and out

Translations

have a very thorough knowledge

Danish: have dyb kundskab
Polish: znać jak własną kieszeń (pl) impf, znać od podszewki (pl) impf