ponderous Synonyms

heavy massive lumbering oppressive serious sluggish slow severe sad rough plodding pleasureless pedestrian onerous monochromatic massy stale steady heavy-footed laboured heavyweight backbreaking weighty unwieldy unhandy ungraceful ungainly trying toilsome tedious substantial stuffy stodgy unstimulating lumpy elaborate dull drudgery dinosaurian cumbrous cumbersome clumsy burly burdensome bulky boring blundering awkward elephantine forced