/ Dictionary / Index C cretin: Meaning and Definition of Find definitions for: cre•tin Pronunciation: (krēt'n or, esp. Brit., kret'n), [key] — n. a person suffering from cretinism. a stupid, obtuse, or mentally defective person. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: cretin (Thesaurus) Crete cretinism Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language