passed oneself off as (verb) impersonate: pretend to be another
Sinonime: alleviate, become unfastened, break up, deliver, detach, discharge, disconnect, disengage, disenthrall, disjoin, ease, ease off, emancipate, extricate, free,
lax, let go, let out, liberate,
loose, loosen, manumit, mitigate, relax, release, separate, slacken, unbar, unbolt, unbuckle, unbutton, unchain, unclasp, undo, unfasten, unfix, unhitch, unhook, unlace, unlash, unlatch, unleash, unlock, unloose, unpin, unscrew, unsnap, unstick, unstrap, untie, untighten, work free, work loose
Antonime: tighten