know inside and out

English

Verb

know inside and out

(transitive, idiomatic) To know (something or someone) very thoroughly.
He's still new to their system, but he knows databases inside and out and will understand the rest soon.

Synonyms

Translations

know (something) very thoroughly

French: connaître sur le bout des doigts (fr)
German: etwas in- und auswendig kennen (de)

Russian: знать назубо́к impf (znatʹ nazubók), знать вдоль и поперёк impf (znatʹ vdolʹ i poperjók)

See also

ins and outs

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