A social, legal, or moral requirement, such as a duty, contract, or promise, that compels one to follow or avoid a particular course of action, The constraining power or authoritative character of a duty, a moral precept, a civil law, or a promise or contract voluntarily made; action upon the will by a sense of moral constraint, The act of obligating,

The condition of being free from oppressive restriction or control by a government or other power, The state of being free, or exempt from external restraint or constraint, physical or moral; freedom; especially, exemption from opposition or irksome restraint of any kind, A privilege or license in violation of the laws of etiquette or propriety

Plural form of constraint

The threat or use of force to prevent, restrict, or dictate the action or thought of others, The state of being restricted or confined within prescribed bounds, One that restricts, limits, or regulates; a check