Used to describe intense criticism or harsh treatment, often with verbs like 言う, 批判する, or けなす. Strongly colloquial and somewhat vulgar.
mixing good and bad; treating all alike
Describes a situation where valuable and worthless things are lumped together without distinction. Often used in the phrase くそみそにする. Less common than sense 1.
My boss harshly criticized my proposal.
I got severely bashed online.
He criticized masterpieces and trash alike, treating them the same.
When moving, I packed necessary and unnecessary things together without sorting.
ぼろくそ is also used for severe criticism, but くそみそ can additionally mean mixing good and bad together.
Katakana variant used for emphasis or in informal writing.
Kanji spelling; rarely used in modern Japanese.
Compound of 糞 (くそ, 'feces') and 味噌 (みそ, 'miso'). The combination of something foul and something valuable gives rise to the meanings of harsh criticism and mixing good with bad. The exact historical derivation is uncertain.