loosen up

verbs

cause to become unblocked
"The medicine unstuffed my nose in minutes!"
loosen up, unstuff
become less tense, less formal, or less restrained, and assume a friendlier manner
"our new colleague relaxed when he saw that we were a friendly group"
loosen up, relax
make one's body limber or suppler by stretching, as if to prepare for strenuous physical activity
limber up, loosen up, warm up
become less tense, rest, or take one's ease
"He relaxed in the hot tub"; "Let's all relax after a hard day's work"
decompress, loosen up, relax, slow down, unbend, unwind
cause to feel relaxed
"A hot bath always relaxes me"
loosen up, make relaxed, relax, unlax, unstrain, unwind