The dictionary definition had this to say;-
plural noun: restraints
a measure or condition that keeps someone or something under control.
"decisions are made within the financial restraints of the budget"
unemotional, dispassionate, or moderate behaviour; self-control. "he urged the protestors to exercise restraint"
self-control, self-restraint, self-discipline, control, moderation, temperateness, abstemiousness, non-indulgence, prudence, judiciousness
"the customary restraint of the British police" reserve, self-restraint, self-control, self-possession, lack of emotion, sobriety, coldness, formality, aloofness, detachment, reticence, uncommunicativeness "her restraint puts people off"
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