loosen up

Verb

• cause to feel relaxed
  • A hot bath always relaxes me
    

• 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
    

• make one's body limber or suppler by stretching, as if to prepare for strenuous physical activity

• 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
    

• cause to become unblocked
  • The medicine unstuffed my nose in minutes!
    

Related words

• Synonyms: 
  relax , unstrain , unlax , unwind , make relaxed , unbend , decompress , slow down , limber up , warm up , unstuff
• Antonyms: 
  tense , strain , tense up , stuff , lug , choke up , block