Third-person singular simple present indicative form of constrain.(verb)
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Use "constrains" in a sentence
"Nevertheless, if having an unpopular name constrains employment opportunities or negatively affects how others perceive one, it is possible that names could have a causal effect on crime."
"There may be a mandate that comes from the United Nations that kind of constrains what U.S. and other coalition forces can and cannot do."
"It "constrains;" that is, it lays a force upon us, as a strong hand draws us withersoever it will."