(to cause something) to become loose or looser

unbind

(to cause something) to become less tight, stiff or rigid; (to case a person, part of the body) to become less tense, active etc

be or feel at ease

to become less severe or cruel (especially by agreeing to something after refusing)

die down; let up

trousers, not part of a suit, worn informally

do little or nothing; loosen

(of flood water) to sink to a lower or to the usual level

die down; decrease

to behave in a way free from strain or formality

be or feel at ease

to remove a screw or screws from (something)

set free; unbind

to become less or weaker; (of the moon) to show a decreasing bright area after full moon

diminish, lessen