逞其口舌

to boast of one's quarrels to others (idiom)

to show off / to flaunt / to carry out or succeed in a scheme / to indulge / to give free rein to

his / her / its / their / that / such / it (refers to sth preceding it)

mouth / classifier for things with mouths (people, domestic animals, cannons, wells etc) / classifier for bites or mouthfuls

dispute or misunderstanding caused by gossip / to talk sb round

used in 喇舌[la3 ji1] to transcribe the Taiwanese word for "tongue"

tongue