Antonyms of verb unstrain

1 sense of unstrain

Sense 1
relax, unstrain, unlax, loosen up, unwind, make relaxed -- (cause to feel relaxed; "A hot bath always relaxes me")
       Antonym of strain (Sense 5)
      => tense, strain, tense up -- (cause to be tense and uneasy or nervous or anxious; "he got a phone call from his lawyer that tensed him up")

Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb unstrain

1 sense of unstrain

Sense 1
relax, unstrain, unlax, loosen up, unwind, make relaxed -- (cause to feel relaxed; "A hot bath always relaxes me")
       => affect -- (act physically on; have an effect upon; "the medicine affects my heart rate")

Antonyms of adj unstrained

2 senses of unstrained

Sense 1
unstrained -- (not placed under psychological stress; "the campaign would not leave party loyalties unstrained")

INDIRECT (VIA relaxed) -> tense -- (in or of a state of physical or nervous tension)

Sense 2
unforced, unstrained -- (not resulting from undue effort; not forced; "a voice with a pleasingly unforced quality"; "his playing is facile and unstrained")

INDIRECT (VIA effortless) -> effortful -- (requiring great physical effort)

Similarity of adj unstrained

2 senses of unstrained

Sense 1
unstrained -- (not placed under psychological stress; "the campaign would not leave party loyalties unstrained")
       => relaxed (vs. tense) -- (without strain or anxiety; "gave the impression of being quite relaxed"; "a relaxed and informal discussion")

Sense 2
unforced, unstrained -- (not resulting from undue effort; not forced; "a voice with a pleasingly unforced quality"; "his playing is facile and unstrained")
       => effortless (vs. effortful) -- (requiring or apparently requiring no effort; "the swallows glided in an effortless way through the busy air")