monstrous (adj.)

• abandoned
• abject
• abominable
• absurd
• abysmal
• appalling
• arrant
• astronomic
• astronomical
• atrocious
• awesome
• awful
• bad
• bandy
• bandy-legged
• barbaric
• barbarous
• baroque
• base
• beastly
• beggarly
• big
• bizarre
• black
• blamable
• blameworthy
• blemished
• boundless
• bowlegged
• brutal
• brutish
• bulky
• cacogenic
• cheesy
• cockamamie
• colossal
• contemptible
• cosmic
• cracking
• crazy
• criminal
• cruel
• crummy
• crying
• damnable
• dark
• debased
• deformed
• degraded
• deplorable
• depraved
• desperate
• despicable
• detestable
• dire
• dirty
• disfigured
• disgraceful
• disgusting
• dreadful
• egregious
• elephantine
• enormous
• epic
• evil
• exaggerated
• excessive
• execrable
• exorbitant
• extensive
• extravagant
• extreme
• fabulous
• fancy
• fantastic
• fateful
• fetid
• fiendish
• filthy
• flagitious
• flagrant
• flatfooted
• foolish
• foul
• freakish
• frightful
• fulsome
• galactic
• gargantuan
• ghoulish
• giant
• gigantic
• glaring
• gluttonous
• grandiose
• grave
• grievous
• grisly
• gross
• grotesque
• gruesome
• hateful
• heinous
• hellish
• heroic
• hideous
• high
• high-flown
• horrendous
• horrible
• horrid
• horrific
• horrifying
• huge
• hyperbolic
• hypertrophied
• ill-proportioned
• immeasurable
• immense
• immoderate
• impressive
• improper
• incontinent
• incredible
• infamous
• infinite
• inhuman
• iniquitous
• inordinate
• insensitive
• intemperate
• jumbo
• king-size
• knavish
• knock-kneed
• lamentable
• large
• laughable
• little
• loathsome
• lousy
• low
• low-down
• ludicrous
• lumpen
• magnificent
• malformed
• mammoth
• mangy
• marred
• massive
• mean
• measly
• merciless
• mighty
• misbegotten
• miserable
• misshapen
• monumental
• mortal
• mountainous
• mutilated
• nasty
• naughty
• nauseating
• nauseous
• nefarious
• noisome
• nonsensical
• notorious
• obnoxious
• odious
• offensive
• ominous
• outrageous
• outre
• outsize
• overgrown
• overlarge
• overmuch
• overweening
• paltry
• peccant
• petty
• pigeon-toed
• pitiable
• pitiful
• poky
• poor
• portentous
• preposterous
• prodigious
• profound
• pug-nosed
• rachitic
• rank
• rattling
• regrettable
• repellent
• reprehensible
• reprobate
• reptilian
• repulsive
• revolting
• rickety
• ridiculous
• rococo
• rotten
• ruthless
• sad
• savage
• scabby
• scandalous
• scrubby
• scruffy
• scummy
• scurvy
• shabby
• shameful
• shameless
• shapeless
• shocking
• shoddy
• showy
• sinful
• sizable
• small
• snub-nosed
• sordid
• spacious
• splendid
• squalid
• steep
• stiff
• stumpy
• stupendous
• superb
• swaybacked
• teratogenic
• terrible
• titanic
• towering
• tremendous
• truncated
• ugly
• unbridled
• unclean
• unconscionable
• undue
• unforgivable
• unmentionable
• unpardonable
• unreasonable
• unrestrained
• unshapely
• unspeakable
• unworthy
• vast
• vicious
• vile
• villainous
• voluminous
• weighty
• weird
• wicked
• wild
• woeful
• worst
• worthless
• wretched
• wrong