This is some fellow Who, having been prais’d for bluntness, doth affect A saucy roughness, and constrains the garb Quite from his nature: he cannot flatter, he,— An honest mind and plain,—he must speak truth!
There are no more uses of "constrained" in the play.
Show samples from other sources
...it is very grievous to be constrained to keep our hands off such a dainty dish as Narnia.
C.S. Lewis -- The Horse and His Boy
It seemed that we were all cloaked in an unwelcome garment of racial difference that constrained, confined, and restricted us.