expression, godan verb (-tsu)
eloquent; have a way with words
Describes someone who speaks well, is articulate, or can talk smoothly. Often used positively, but can imply glibness depending on context.
See also: 弁が立つ (べんがたつ)
彼は口が立つから、交渉役に向いている。
He is eloquent, so he is suited for the role of negotiator.
口が立つ人ほど、時には黙ることも大切だ。
The more eloquent a person is, the more important it is to sometimes stay silent.