拘束 | jū shù | to restrict / to restrain / constrained / awkward / ill at ease / uncomfortable / reticent | |
沉默寡言 | chén mò guǎ yán | habitually silent (idiom) / reticent / uncommunicative | |
寡言 | guǎ yán | taciturn / reticent | |
守口如瓶 | shǒu kǒu rú píng | lit. to guard one's mouth like a closed bottle (idiom) / tight-lipped / reticent / not breathing a word |