Synonyms for relax

verb

1. To rest

   unwind, repose, recline, settle back, make oneself at home, breathe easy, take it easy, take one's time, take a break, sit around, sit back, stop work, lie down, unbend, be at ease, loaf, cool one's heels*, take a breather*, ease off*, take five*, slack off*, decompress*, let one's hair down*; see also rest 1.

2. To make less rigid

   loosen, slacken, bend, ease up on; see decrease 2, ease 2.