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

1. Cause to feel relaxed
   - relax, unlax, loosen up, unwind, make relaxed

See also: effortless, relaxed

Type of: affect

Antonym: strain

• perennity
• Pereskia
• Pereskia aculeata
• perestroika
• perfect
• perfect game
• perfect gas
• perfect number
• hidden tax
• hiddenite
• hiddenness
• hide
• hide and go seek
• hide-and-seek
• hideaway
• hidebound
• Hideki Yukawa
• hideous
• hideously
• hideousness
• hideout
• hider
• hidey-hole
• Hideyo Noguchi
• hiding