na-adjective
severely beaten up; thoroughly defeated
Colloquial emphatic form of ぼこぼこ. Often used in the pattern ボッコボコにする (beat someone up badly) or ボッコボコにされる (get beaten up). Describes a one-sided physical beating or a crushing defeat in a fight or competition.
See also: ぼこぼこ
あいつをボッコボコにしてやった。
I beat that guy to a pulp.
試合でボッコボコに負けた。
I got completely crushed in the match.
na-adjective
fiercely criticized; bombarded with verbal abuse
Colloquial. Describes being relentlessly attacked with words, such as harsh criticism or verbal abuse. Often used in patterns like ボッコボコに言われる or ボッコボコに批判される.
ネットでボッコボコに叩かれた。
I got torn apart online.
上司に企画をボッコボコに批判された。
My boss ripped my proposal to shreds.