Knuckle under and Wave the white flag

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

Wave the white flag and knuckle under are semantically related. In some cases you can use "Wave the white flag" instead a verb "Knuckle under".

Knuckle under and wave the white flag are semantically related. Sometimes you can use "Knuckle under" instead a verb phrase "Wave the white flag".