1. Not resulting from undue effort; not forced
   "his playing is facile and unstrained";
   - unforced
    
2. Not placed under psychological stress
   "the campaign would not leave party loyalties unstrained"

1. Make relaxed
   "The massage unstrained her tense muscles";
   - relax, unlax [informal, rare], loosen up, unwind

See also: effortless, relaxed

Type of: affect