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Definitions

monstrous

[mon-struhs] / ˈmɒn strəs /
ADJECTIVE
unnatural, shocking
Synonyms
STRONGEST
atrocious dreadful egregious freakish frightful grotesque gruesome heinous hideous horrendous horrible horrifying inhuman intolerable obscene odious outrageous preposterous terrible vicious
WEAK
abnormal desperate devilish diabolical disgraceful evil fiendish flagitious foul hellish loathsome morbid ominous satanic scandalous teratoid uncanny unusual
Antonyms
STRONGEST
beautiful delightful glorious great inoffensive magnificent pleasant pleasing wonderful
WEAK
common expected little miniature natural ordinary small standard tiny
ADJECTIVE
very large
Synonyms
STRONGEST
colossal enormous gargantuan gigantic huge immense impressive magnificent mammoth massive monumental towering tremendous
WEAK
cracking elephantine fantastic giant grandiose great prodigious stupendous titanic vast whopping
Antonyms
STRONGEST
dwarfed insignificant little miniature miniscule minute small teeny tiny unimportant unimpressive
WEAK
average common expected natural ordinary standard

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

We know we are not monsters, but we are equally sure that we have done monstrous things.

From Slate • Mar. 16, 2026

But that may have been the actor’s way of absolving himself of his monstrous off-screen behavior.

From The Wall Street Journal • Mar. 12, 2026

The Russian foreign ministry described the strike as a "monstrous crime against the peaceful population".

From Barron's • Mar. 11, 2026

Van Der Beek communicates an unmistakable feeling that there is a good person somewhere inside his character, dying to break free of the tortured fate his monstrous doppelganger has created for him.

From Salon • Feb. 15, 2026

The sea overflowed with water from the Starry River of the Sky and churned with monstrous beasts.

From "When the Sea Turned to Silver" by Grace Lin

Vocabulary lists containing monstrous

"The Crucible" -- Vocabulary from all 4 Acts

Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide!

Metamorphosis

Interested in learning more words like this one? Our team at Vocabulary.com has got you covered! You can review flashcards, quiz yourself, practice spelling, and more – and it's all completely free to use!

Words from Shakespearean Insults

Want to remember this word for good? Start your learning journey today with our library of interactive, themed word lists built by the experts at Vocabulary.com – we'll help you make the most of your study time!