Word: 严 (yán) Traditional: 嚴 严 dictionary entry yán tight (closely sealed); stern; strict; rigorous; severe; father; surname Yan Full dictionary entry for 严 Example sentences using 严 2 sentences, showing page 1 of 1. 他这个人嘴很严。 Tā zhège rén zuǐ hěn yán. He is the last person to give away the secret. 校长的脸色很严，大家都安静了。 Xiàozhǎng de liǎnsè hěn yán, dàjiā dōu ānjìng le. The principal's expression was stern, and everyone fell quiet.