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