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

2 senses of constrain

Sense 1
restrain, encumber, cumber, constrain -- (hold back)
       => restrict, restrain, trammel, limit, bound, confine, throttle -- (place limits on (extent or access); "restrict the use of this parking lot"; "limit the time you can spend with your friends")

Sense 2
stiffen, tighten, tighten up, constrain -- (restrict; "Tighten the rules"; "stiffen the regulations")
       => restrict, restrain, trammel, limit, bound, confine, throttle -- (place limits on (extent or access); "restrict the use of this parking lot"; "limit the time you can spend with your friends")

Antonyms of adj constraining

1 sense of constraining

Sense 1
confining, constraining, constrictive, limiting, restricting -- (restricting the scope or freedom of action)

INDIRECT (VIA restrictive) -> unrestrictive -- (not tending to restrict)

Similarity of adj constraining

1 sense of constraining

Sense 1
confining, constraining, constrictive, limiting, restricting -- (restricting the scope or freedom of action)
       => restrictive (vs. unrestrictive) -- (serving to restrict; "teenagers eager to escape restrictive home environments")