expression, godan verb (-su)
speak ambiguously; be vague; equivocate
Used when someone avoids giving a clear answer or opinion, often to dodge responsibility or to be polite. The expression literally means 'to muddy one's mouth'.
彼は都合が悪くなると、いつも口を濁す。
He always speaks ambiguously when things get awkward for him.
直接的
She answered the direct question vaguely.