to refuse something because you think it's not good enough

(I spent hours preparing dinner and you turn your nose up at it!)

to arrive/appear

(He never turns up on time. He's always late).

to go to sb for comfort

(When I split up with my husband I didn't have anyone to turn to).

to refuse sb's offer

(He asked her to marry him and she turned him down).

to become (21 years old)

(Tomorrow I'll turn 21, let's celebrate!)

to make sb feel not attracted to someone

(Men who do not shave regularly turn me off.)

to make a positive change in one's life

(I was depressed for a while after my divorce but now I've turned over a new leaf. I feel really good about the future).