keep one's hair on hold your horses wait be patient hold everything hold your water bide your time hang back pause sit tight hold the line play a waiting game wait a minute put something off defer hold off hang fire lie in wait stall put on hold hold back calm mellow relax chill chill out cool down cool it cool off lighten up loosen up settle down simmer down take it easy come back down to earth compose oneself control oneself get a grip keep cool keep your head play it cool remain calm keep calm remain composed remain unruffled keep a cool head stay calm have one's wits about one go with the flow maintain equilibrium not turn a hair not lose one's head restrain yourself control one's temper appear unaffected not show emotion keep control of oneself keep a stiff upper lip bite one's lip More