behave vs act reflexively

Other hyponyms of behave include act involuntarily, bend over backwards, fall over backwards, presume, vulgarise, vulgarize, optimise, optimize, quack, menace, make, bluster, swagger, swash, freeze, wanton, romanticize, sentimentalise, sentimentalize, sentimentise, sentimentize, bungle, play, toy, act, act as, play, stooge, jest, joke, piffle, make, make as if, break down, lose it, snap, fluster, dally, dawdle, assert, put forward, backslap, deal, hugger mugger, walk around, sauce, pose, posture, footle, frivol, trifle, puff up, swell, follow, loosen up, relax, rage, ramp, storm, wildin', spaz, thug.