Cop out and Pass up

Cop out verb - To break a promise or agreement.

Pass up and cop out are semantically related In some cases you can use "Pass up" instead a verb "Cop out".

Pass up verb - To show unwillingness to accept, do, engage in, or agree to.

Cop out and pass up are semantically related in avoid topic. Sometimes you can use "Cop out" instead a verb "Pass up", if it concerns topics such as get away from.