jian1
(wooden) box; cup; old variant of 緘|缄; letter

jian1
letters; to close; to seal

strokes 12
radical
strokes after radical 9
缄口不言 緘口不言 jian1 kou3 bu4 yan2
lips sealed and not saying anything (idiom); fig. to omit mention (of a non-person or embarrassing topic); to censor

缄默 緘默 jian1 mo4
to keep silent