口が堅い

くちがかたい

Also written 口が固い

Meanings

1. Expression, い-adjective tight-lipped; able to keep a secret See also: 口の堅い (くちのかたい). Antonym: 口が軽い (くちがかるい).

Kanji

• 口 mouth. Read as くち.
• 堅 firm. Read as かたい.

Jinuma: Japanese Dictionary · Word lists