monstrous

adjectives

abnormally large
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above average in size or number or quantity or magnitude or extent
"a large city"; "set out for the big city"; "a large sum"; "a big (or large) barn"; "a large family"; "big businesses"; "a big expenditure"; "a large number of newspapers"; "a big group of scientists"; "large areas of the world"
shockingly brutal or cruel
"murder is an atrocious crime"; "a grievous offense against morality"; "a grievous crime"; "no excess was too monstrous for them to commit"
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distorted and unnatural in shape or size; abnormal and hideous
"tales of grotesque serpents eight fathoms long that churned the seas"; "twisted into monstrous shapes"
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