high-and-mighty

(redirected from act high-and-mighty)

high-and-mighty

Fig. self-important and arrogant. I don't know why William is so high-and-mighty. He's no better than the rest of us. The boss acts high-and-mighty because he can fire us all.

high and mighty

Conceited, haughty, as in She was too high and mighty to make her own bed. This expression originally alluded to high-born rulers and was being transferred to the merely arrogant by the mid-1600s.
See also: and, high, mighty