loosen up (
http://definr.com/loosen up)
v 1: cause to become unblocked; "The medicine unstuffed my nose
in minutes!" [syn:
unstuff] [ant:
stuff]
2: prepare for strenuous physical activity [syn:
limber up, {warm
up}]
3: become less tense; "He relaxed in the hot tub" [syn:
relax,
unbend,
unwind,
decompress,
slow down] [ant:
tense]
4: cause to feel relaxed; "A hot bath always relaxes me" [syn:
relax,
unstrain,
unlax,
unwind,
make relaxed]
[ant:
tense,
tense]