accidentally (unexpectedly, unintentionally)

Implicit Association Test

prejudice

unconsciousness / (psychology) unconscious

to investigate, to look up, to look into, to study, to examine, to check up on, to look over / (music) to play, to perform (an instrument) / (music) to tune

associate, connect

association of ideas

conjunctive form of 受ける (ukeru) [ichidan]

to receive; to get / to do the things which a former person did / gain popularity / be funny; be hilarious

inspection, examination, check (usually done by a 3rd party)