Idiom
turn someone off
Theme: DISGUST
to discourage and disgust someone. (Informal.)His manner really turns me offThat man has a way of turning off everyone he comes in contact with.
Slang
turn someone off
Theme: DULL
tr. to dull someone's interest in someone or something.The prof turned me off to the subject.The preacher set out to turn off the congregation to sin.
Idiom
turn someone offturn (someone) off
to cause someone to lose interest or sympathy.Her offensive remarks really turned me off.Her opening statement completely turned off the jury.