loosen
/ˈluːsən/verb
with obj.
1- make (something tied, fastened, or fixed in place) less tight or firm使松开：
loosen your collar and tie.
解开领口, 松开领带。
1.1
- make more lax放松：
his main mistake was to loosen monetary policy.
他最主要的错误是放松了货币政策
as noun loosening a loosening of the benefit rules.补助金发放规定的放宽。
1.2
- relax (one's grip or muscles)放松（紧抓的手, 肌肉）：
he loosened his hold so she could pull her arms free.
他松了松手, 于是她得以把胳膊拔出来。
1.3
- no obj. become relaxed or less tight变得放松, 变得较为不绷紧：
the stiffness in his shoulders had loosened.
他肩部的僵直感减轻了。
1.4
- make (a connection or relationship) less strong使（联系, 关系）不那么紧密：
he wanted to strengthen rather than loosen union links.
他希望加强, 而不是放松工会的联系。
1.5
- (with reference to the bowels) make or become relaxed prior to excretion使（肠道）在排泄前畅通; （肠道）在排泄前变得畅通：
no obj. his bowels loosened in terror.惊恐之下, 他大便失禁。
短语
loosen someone's tongue
- make someone talk freely使某人无拘束（或无顾忌）地说话。