Synonyms of monstrous

monstrous 1 of 2

adjective

ˈmän(t)-strəs 

1

as in distorted

badly or imperfectly formed

a monstrous melon that was clearly not fit to eat

Synonyms & Similar Words

• distorted
• mutant
• misshapen
• deformed
• malformed
• shapeless
• ugly
• horrible
• terrible
• crooked
• horrific
• freakish
• abnormal
• disproportionate
• asymmetric
• unequal
• aberrant
• lopsided
• disfigured
• asymmetrical
• unbalanced
• unattractive
• irregular
• defaced
• nonsymmetrical
• overbalanced

Antonyms & Near Antonyms

• perfect
• undeformed
• flawless
• shapely

2

as in gruesome

extremely disturbing or repellent

the monstrous measures taken by the dictator against anyone who opposed his regime

Synonyms & Similar Words

• gruesome
• horrific
• shocking
• nightmare
• horrible
• terrible
• frightening
• horrifying
• terrifying
• hideous
• terrific
• dreadful
• awful
• nightmarish
• appalling
• horrid
• scary
• grisly
• ghastly
• sickening
• macabre
• frightful
• horrendous
• atrocious
• lurid
• disgusting
• formidable
• fearful
• grewsome
• grotesque
• ugly
• alarming
• obscene
• loathsome
• repulsive
• fearsome
• abominable
• heinous
• revolting
• dire
• odious
• unspeakable
• intimidating
• direful
• offensive
• abhorrent
• repugnant
• obnoxious
• deplorable
• evil
• vile
• forbidding
• disagreeable
• redoubtable
• gut-wrenching
• bloodcurdling
• noxious
• distasteful
• hair-raising
• heart-stopping
• nauseating
• noisome
• unsightly
• foul

Antonyms & Near Antonyms

• attractive
• delightful
• pleasant
• delicious
• welcome
• satisfying
• appealing
• delectable
• agreeable
• enticing
• enjoyable
• pleasurable
• pleasing
• inviting
• comforting
• soothing
• cheering

3

as in gigantic

unusually large

a monstrous tomato as big as a basketball

Synonyms & Similar Words

• gigantic
• huge
• enormous
• giant
• vast
• tremendous
• massive
• colossal
• mammoth
• immense
• monster
• monumental
• astronomical
• titanic
• astronomic
• bumper
• mountainous
• mighty
• big
• gargantuan
• sizable
• oversized
• heroic
• humongous
• cosmic
• great
• prodigious
• oceanic
• grand
• oversize
• mega
• herculean
• planetary
• cyclopean
• humungous
• cosmical
• elephantine
• whopping
• galactic
• super
• heroical
• jumbo
• considerable
• majestic
• pharaonic
• substantial
• supersized
• formidable
• Himalayan
• handsome
• vasty
• leviathan
• king-size
• staggering
• good
• gigantesque
• imposing
• king-sized
• Brobdingnagian
• whacking
• supersize
• extensive
• major
• sizeable
• gross
• outsized
• voluminous
• super-duper
• walloping
• bulky
• hefty
• tidy
• overgrown
• infinite
• outsize
• grandiose
• hulking
• stupendous
• overwhelming
• goodly
• largish
• lofty
• cavernous
• towering
• monolithic
• immeasurable
• august
• boundless

Antonyms & Near Antonyms

• tiny
• diminutive
• miniature
• microscopic
• minuscule
• infinitesimal
• micro
• bitty
• microscopical
• pocket
• pygmy
• wee
• little bitty
• teeny
• small
• Lilliputian
• midget
• puny
• teensy
• minute
• little
• smallish
• mini
• undersized
• petite
• undersize
• microminiature
• bantam
• teeny-weeny
• teensy-weensy
• dinky
• dwarfish
• pint-sized
• pint-size
• half-pint

4

as in ugly

unpleasant to look at

some monstrous high-rises have begun to spoil that lovely residential neighborhood

Synonyms & Similar Words

• ugly
• hideous
• grotesque
• unpleasing
• awful
• disgusting
• vile
• unattractive
• unsightly
• unappealing
• unlovely
• homely
• horrible
• unbeautiful
• ill-favored
• abominable
• loathsome
• sickening
• repulsive
• appalling
• uncomely
• horrid
• revolting
• unhandsome
• unpretty
• abhorrent
• repugnant
• dreadful
• repellent
• nauseating
• gross
• distasteful
• nauseous
• repellant
• noisome
• unbecoming
• plain
• frumpy
• unshapely
• unaesthetic
• frumpish

Antonyms & Near Antonyms

• beautiful
• handsome
• stunning
• attractive
• gorgeous
• lovely
• aesthetic
• pretty
• beauteous
• goodly
• ravishing
• cute
• fair
• good-looking
• seemly
• comely
• knockout
• esthetic
• drop-dead
• fetching
• taking
• aesthetical
• shapely
• impressive
• imposing
• bonny
• sightly
• well-favored
• esthetical
• bonnie
• prepossessing

monstrous

2 of 2

adverb

chiefly dialect

as in extremely

to a great degree

a monstrous pretty gal, she was

Synonyms & Similar Words

• extremely
• incredibly
• damned
• very
• terribly
• damn
• highly
• badly
• too
• severely
• so
• jolly
• desperately
• really
• super
• full
• mighty
• seriously
• that
• real
• such
• far
• wildly
• wicked
• greatly
• awful
• intensely
• most
• deadly
• heavily
• much
• good and
• exceptionally
• especially
• exceeding
• beastly
• fantastically
• roaring
• fiercely
• awfully
• absolutely
• passing
• extra
• immensely
• particularly
• fabulously
• frightfully
• specially
• bone
• rattling
• exceedingly
• sore
• supremely
• utterly
• filthy
• whacking
• way
• almighty
• eminently
• hugely
• thumping
• cracking
• dang
• uncommonly
• totally
• remarkably
• surpassingly
• enormously
• vitally
• mortally
• colossally
• vastly
• achingly
• positively
• thoroughly
• a lot
• completely
• stinking
• spanking
• sorely
• deeply
• corking
• archly
• ever
• roaringly
• entirely
• as all get-out
• blisteringly
• mightily
• wholly
• unco
• majorly
• downright
• significantly
• right
• profoundly
• considerably
• flat-out
• noticeably
• fully
• radically
• visibly
• obviously
• purely
• monstrously
• substantially
• notably
• extensively
• markedly
• palpably
• monumentally
• obscenely
• altogether
• plainly
• astonishingly
• discernibly
• excessively
• staggeringly
• grandly
• amazingly
• plentifully
• appreciably
• astronomically
• abundantly
• overmuch

Antonyms & Near Antonyms

• little
• somewhat
• slightly
• nominally
• negligibly
• just
• scarcely
• barely
• hardly
• minimally
• meagerly
• scantily
• marginally

Synonym Chooser

How is the word monstrous different from other adjectives like it?

Some common synonyms of monstrous are prodigious, stupendous, and tremendous. While all these words mean "extremely impressive," monstrous implies a departure from the normal (as in size, form, or character) and often carries suggestions of deformity, ugliness, or fabulousness.

the monstrous waste of the project

In what contexts can prodigious take the place of monstrous?

In some situations, the words prodigious and monstrous are roughly equivalent. However, prodigious suggests a marvelousness exceeding belief, usually in something felt as going far beyond a previous maximum (as of goodness, greatness, intensity, or size).

made a prodigious effort and rolled the stone aside

Where would stupendous be a reasonable alternative to monstrous?

Although the words stupendous and monstrous have much in common, stupendous implies a power to stun or astound, usually because of size, numbers, complexity, or greatness beyond description.

a stupendous volcanic eruption

When is it sensible to use tremendous instead of monstrous?

The words tremendous and monstrous are synonyms, but do differ in nuance. Specifically, tremendous may imply a power to terrify or inspire awe.

the tremendous roar of the cataract

Example Sentences

Recent Examples of monstrous

Adjective

With the ability to duplicate and turn into the titular monstrous creatures, the gremlins begin terrorizing Billy’s small town. —Glenn Garner, Deadline, 30 July 2025

Nearly three decades after the rage virus infected the U.K., a young boy (Alfie Williams) on a remote island ventures to the mainland, runs afoul of monstrous figures and meets a strange doctor (Ralph Fiennes) in a quest to help his sick mom (Jodie Comer). —Brian Truitt, USA Today, 4 July 2025

The spin-off prequel showcases the day in which the monstrous aliens land on Earth, and the chaos that leads to the events of the mainline story. —James Brizuela, MSNBC Newsweek, 1 Aug. 2025

Thanks to his monstrous July, the 22-year-old first baseman recently became the American League Rookie of the Year favorite over All-Star teammate Jacob Wilson according to most sports books and was a close second in MLB.com’s most-recent poll released July 16. —Sean Campbell, Sacbee.com, 31 July 2025