たちが悪い、タチが悪い、質が悪い、性質が悪い
たちがわるい
tachigawarui
JMdict entry #2259540
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expressions (phrases, clauses, etc.)adjective (keiyoushi)
of bad character; ill-natured; nasty; vicious; wicked; malignant
antonym: たちが良い