Meaning of the word "inside out" in English

What does "inside out" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

inside out

US /ˈɪnˌsaɪd ˈaʊt/
UK /ˈɪnˌsaɪd ˈaʊt/

Adverb

1.

with the inner surface turned to the outside

Example:
He was wearing his shirt inside out.
Make sure to turn the socks inside out before washing them.
2.

completely; thoroughly

Example:
He knows the city inside out.
The detective examined the crime scene inside out.