noun, noun or participle which takes 'suru', intransitive verb
complete defeat; utter defeat; annihilation
Used in sports, games, battles, and competitions to describe a total loss with no chance of winning. Often used as a suru-verb (完敗する).
昨日の試合は完敗だった。
Yesterday's game was a complete defeat.
強豪チームに完敗
We suffered a crushing defeat against the powerhouse team.