staidness n a trait of dignified seriousness Usage(s) His staidness ignored cries from coaches and spectators to outlaw out-of-bounds kickoffs and drop restrictions on quick passes. Both before and after the outcome had been determined, the exuberant, boisterous Republicans turned topsy-turvy their reputation for staidness. For those used to staidness from string quartets, the atmosphere had something of the wild freedom of coasting downhill on a bike, no hands. Synonym(s) sedateness solemnity solemness