Fold up and Knuckle under

Fold up verb - Bend or lay so that one part covers the other.

Knuckle under and fold up are semantically related. in give in topic. In some cases you can use "Knuckle under" instead a verb "Fold up".

Knuckle under verb - To cease resistance (as to another's arguments, demands, or control).

Fold up and knuckle under are semantically related. Sometimes you can use "Fold up" instead a verb "Knuckle under".