Turn-on (noun)

Something that causes pleasure, excitement, or sexual arousal.

Origin:

Phrase originated in the late 1960s to mean an exciting stimulus.

Examples:

1. Listening to music is a turn-on for her.
2. For him, a confident woman is a real turn-on.
3. She found his intelligence to be a major turn-on.
4. His sense of humor was a definite turn-on.
5. The thought of traveling to new places was a major turn-on for her.