heavy

abstruse abundant ample amplest appalling arduous beefy big league bloodiest bloody bulky burdensome bushy close cloudy clumsy copious corpulent criminal criminal cumbersome cumbrous dangerous deep dense denser difficult dopey drowsy dull dull duller duller effortful elevated esoteric extraordinary fat fatter fighter fighters firm fleshy foremost fraught full-bodied grave grave gravest gravest gravid grievous gross grueling hard harder heavyweight hebetudinous hefty hero/heroine heroes heroines high-grade hot-blooded hulking hulky illegal illicit illustrious important incompressible iron jeopardous joyless labored laborious languid languorous leaden lethargic listless loud louder loudest lowering lumbering lymphatic major-league massive meaningful memorable miraculous momentous more abundant more dangerous more difficult more meaningful more primary more serious more significant more significant more solid more urgent most dangerous most notable most primary most serious most significant most significant most urgent most vital nodding notable noteworthy obese onerous oppressive oppressive outlawed overweight parlous parturient passionate perfervid plenitudinous plenteous ponderable ponderous portly pregnant primary/prime primest prodigious profound psychical puissant recondite rich richer richest roaring roiled roiled roily roily rotund rugged sensual serious severe significant significant sleepy slow slow-footed slow-going slow-paced slower slowest sluggish slumberous smoggy soggy solemn solid somnifacient somniferous somnific squat sticky stiff stifling stodgy stolid stout stouter stuffy stuporous stuporous substantial sullen sultry taxing thick thick thick tiresome torpid tough tougher toughest troublesome tubby turbid unfathomable ungainly urgent villain vital weighty wooden