inside and out

Thoroughly; down to the last detail. I've been studying this material for weeks now, so I know it inside and out. I think Mary will do great at the audition, now that she knows the dance inside and out. These cabbies know the city streets inside and out.

See also: and, inside, out

See also:

think long and hard about (something)
know (someone or something) like a book
know like a book
know like a book, to
rocks in one's head, have
rocks in one's head, to have
have rocks in (one's) head
have rocks in head
have rocks in one's head
(one) can read (someone) like a book

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