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noun mo·ron \ˈmȯr-ˌän\

Simple Definition of moron

  • : a very stupid or foolish person

Source: Merriam-Webster's Learner's Dictionary

Full Definition of moron

  1. 1 usually offensive :  a person affected with mild mental retardation

  2. 2 :  a very stupid person

moronic play \mə-ˈrä-nik, mȯ-\ adjective
moronically play \-ni-k(ə-)lē\ adverb
moronism play \ˈmȯr-ˌä-ˌni-zəm\ noun
moronity play \mə-ˈrä-nə-tē, mȯ-\ noun

Examples of moron in a sentence

  1. They were acting like a bunch of morons.

  2. I can't believe I did something so stupid. I feel like a complete moron.

Origin of moron

irregular from Greek mōros foolish, stupid

First Known Use: 1910

Rhymes with moron

aeon, add-on, agon, agone, Akan, Ambon, Amman, anon, Anshan, archon, argon, Argonne, atman, axon, bank on, barchan, baton, big on, Bion, blouson, bon ton, bonbon, boron, boson, bouillon, bring on, build on, bygone, caisson, call on, canton, capon, cast on, catch on, Ceylon, chaconne, Charon, chew on, chiffon, chiton, chrismon, Cimon, cistron, clip-on, codon, come-on, cordon, coupon, crampon, crayon, crepon, cretonne, crouton, Dacron, dead-on, Dear John, doggone, Dogon, Don Juan, exon, fall on, flacon, foregone, form on, Freon, fronton, futon, Garonne, get on, Gibran, gluon, gnomon, go on, guidon, hadron, Hainan, hand on, hands-on, hang on, have on, hazan, head-on, Henan, hereon, high on, hit on, hogan, hold on, Huainan, icon, intron, ion, jargon, Jinan, jomon, kanban, kaon, Kashan, keen on, Khoisan, Kirman, koan, krypton, kurgan, Kurgan, lauan, lepton, let on, lock on, log on, look on, Luzon, macron, Masan, Medan, Memnon, meson, micron, Milan, mod con, mouton, Multan, muon, natron, nekton, neon, nephron, neuron, neutron, ninon, Nippon, nylon, odds-on, Oman, Oran, Orlon, paeon, parton, Pathan, pavane, pecan, peon, Phaëthon, photon, phyton, pick on, pion, piton, plankton, pluton, pompon, prion, proton, Pusan, push on, put-on, pylon, python, racon, radon, rag on, rayon, recon, rhyton, run-on, run on, Saint John, Saipan, salon, San Juan, Schliemann, Schumann, Shaban, shaman, shaitan, Shingon, sign on, sit on, slip-on, snap-on, solon, Solon, soupçon, soutane, stand on, stolon, stuck on, Suwon, sweet on, Taiwan, taipan, take on, tampon, taxon, Teflon, Tehran, teston, thereon, Tian Shan, tisane, torchon, toucan, toyon, trade on, trigon, Tristan, triton, trogon, try on, Tucson, turned-on, turn on, Typhon, tzigane, uhlan, Ulsan, upon, wait on, walk-on, witan, whereon, Wonsan, wonton, work on, Wuhan, xenon, Xi'an, Yukon, Yunnan, zircon

MORON Defined for Kids


noun mo·ron \ˈmȯr-ˌän\

Definition of moron for Students

  1. :  a stupid or foolish person

Medical Dictionary


noun mo·ron \ˈmō(ə)r-ˌän, ˈmȯ(ə)r-\

Medical Definition of moron

  1. dated now offensive :  a person affected with mild mental retardation

moronic \mə-ˈrän-ik, mȯ-\play adjective, dated now offensive

Law Dictionary


noun mo·ron \ˈmōr-ˌän\

Legal Definition of moron

  1. :  a person with a mild or moderate intellectual disability —used formerly — see also idiot

Seen and Heard

What made you want to look up moron? Please tell us where you read or heard it (including the quote, if possible).


the range of perception or understanding

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