be unflappable bear up come up fighting die hard get along get home free get on go on go on with hang in hang in there hang on hang tough hold fast hold on hold out hold up keep at it keep up live through it live with it make out manage never say die not back down not budge not flag not give up not submit not weaken persevere persist remain firm ride it out see it out see it through stand fast stand firm stand pat stand up stay it out stay put stay the distance stay with it stick stick fast stick it stick out stick to it stick with it survive sweat it out take it take what comes tough it out weather weather the storm