noun
showering with blows; beating mercilessly; pummeling
Describes a relentless physical attack, often with fists, weapons, or in a figurative sense (e.g., verbal assault). The メッタ part comes from 滅多 (reckless, thoughtless), emphasizing the indiscriminate nature of the beating.
彼は相手にメッタ打ちにされた。
He was showered with blows by his opponent.
その記事は批判のメッタ打ちを受けた。
The article received a merciless barrage of criticism.
Full kanji variant with 撃ち; rare.
Compound of 滅多 (めった, reckless, indiscriminate) + 打ち (うち, hitting). The メッタ spelling in katakana is common for emphasis. The variant 撃ち uses the kanji for shooting, implying a similar relentless attack with projectiles.