口が軽い

くちがかるいkuchigakarui

expression · i-adjective

  1. having a loose tongue
  2. being talkative
  3. speaking without thinking
  4. being unable to keep a secret

Kanji in this word

Study it in Yanamino

Data from JMdict, KANJIDIC2 (EDRDG), KanjiVG, CC-CEDICT and Make Me a Hanzi. Sources and licences