blend in (third-person singular simple present blends in, present participle blending in, simple past and past participle blended in)
- (transitive) To add (an ingredient) by mixing or blending.
- (intransitive, often followed by "with") To fit unnoticed into a surrounding.
- He disguised himself as a businessman to blend in with the others wearing suits.
- The aliens adopted human form in order to blend in.