Chicken out and Give up

Chicken out verb - Remove oneself from an obligation.

Give up and chicken out are semantically related in back down topic. In some cases you can use "Give up" instead a verb "Chicken out".

Give up verb - To give (something) over to the control or possession of another usually under duress.

Chicken out and give up are semantically related in withdraw topic. You can use "Chicken out" instead a verb "Give up", if it concerns topics such as back down, back off, admit defeat.