rowdiness; rowdy person; rowdy event
Refers to boisterous, unruly behavior or a person/event characterized by such behavior. Often used in casual or colloquial contexts.
That kid is a real rowdy one, always making a racket.
昨夜のパーティーは悪たればかりだった。
Last night's party was nothing but rowdiness.
abusive language; insults; slander
Compound of 悪 (aku, 'bad') and たれ (tare), a suffix derived from 垂れ (tare, 'hanging') that can indicate a person with a certain quality. The exact historical derivation is uncertain, but the word has been used since at least the Edo period to describe unruly individuals.