Expressions (phrases, clauses, etc.)
completely; thoroughly; decisively; unsparingly; beyond recognition; until there's no untouched (undamaged) part
usu. ～に
カズちゃん、さっき完膚無きまでに振っちゃおうとしたでしょ？You were about to dump her flat out, weren't you?
Also written 完膚無きまで【かんぷなきまで】