v become less tense, rest, or take one's ease
v make less taut
v become loose or looser or less tight
v cause to feel relaxed
v become less tense, less formal, or less restrained, and assume a friendlier manner
v make less severe or strict
v become less severe or strict
v make less active or fast
v. （使）轻松( relax的第三人称单数 ); （使）松弛; 放宽; （使）放松