Synonyms of monstrous in English:


See definition of monstrous


1‘a monstrous creature with great leathery wings and a horny head’


grotesque, hideous, ugly, ghastly, gruesome, horrible, horrid, horrific, horrendous, horrifying, grisly, disgusting, repulsive, repellent, revolting, nightmarish, dreadful, frightening, terrifying, fearsome, freakish, malformed, misshapen, unnatural, abnormal, mutant, miscreated

rare teratoid


lovely, beautiful, normal

2‘a monstrous tidal wave engulfed the countryside’


huge, enormous, massive, great, gigantic, giant, colossal, mammoth, vast, immense, tremendous, mighty, stupendous, monumental, epic, prodigious, mountainous, titanic, towering, elephantine, king-sized, king-size, gargantuan, Herculean, Brobdingnagian, substantial

informal mega, monster, whopping, whopping great, thumping, thumping great, humongous, jumbo, hulking

British informal whacking, whacking great, ginormous


tiny, minute

3‘could he be guilty of such monstrous acts?’


appalling, abhorrent, heinous, evil, wicked, abominable, terrible, horrible, dreadful, hideous, foul, vile

outrageous, shocking, disgraceful, scandalous, atrocious

villainous, nasty, ghastly, odious, loathsome, shameful, infamous, nefarious, iniquitous, unspeakable, intolerable, contemptible, despicable, vicious, cruel, savage, brutish, bestial, barbaric, barbarous, base, inhuman, depraved, fiendish, devilish, diabolical, satanic, ruthless, merciless

British informal beastly

rare egregious, flagitious


admirable, good, kind