unrestrained adjective3 •Immoderate; not restrained or held in check; inordinate (literary).The party was a scene of unrestrained debauchery. •Spontaneous, natural and informal; unconstrained.Their meeting was one of unrestrained joy. •Not subject to physical restraint.Managing unrestrained prisoners alone in any environment is inherently dangerous and should not be tolerated. — 2009 formsmore unrestrained · most unrestrained