demeans oneself (verb) behave: act reasonably, properly
Sinonime: apple-polish, be servile, bootlick, brownnose, butter up, cajole, fall all over, fall on one's knees, flatter, honey up, kiss one's feet, kiss-up, kowtow, lay it on, lick boots, massage*, oil, pay court, play up to, scratch one's back, stroke*, suck up to, truckle, woo*
Antonime: act up, misbehave