Nouns ending with the letter M are listed here.

absenteeism, abstractionism, acclaim, activism, aim, alarm, album, alcoholism, algorithm, altruism, alum, aluminum, alundum, ammonium, anachronism, anagram, anchoritism, animism, annum, antagonism, antiserum, archaism, arm, asceticism, athleticism, atm, atom, auditorium, authoritarianism, autism, axiom

ballroom, baptism, barium, bathroom, beam, bedlam, bedroom, beryllium, biennium, bloodstream, bloom, blossom, boom, boredom, bosom, bottom, bridegroom, brim, broom, bum

cadmium, calcium, calm, capitalism, capsicum, carborundum, cardamom, careerism, catechism, centum, cerebellum, charm, chartroom, chasm, cherubim, chiefdom, chromatogram, chromium, chum, claim, clam, classroom, cocopalm, colchicum, colloquium, colonialism, commercialism, communism, compendium, conservatism, continuum, cosmopolitanism, courtroom, cream, criticism, curriculum, custom, cynicism, cytoplasm

dam, datum, decorum, defeatism, delirium, despotism, determinism, diagram, diam, diaphragm, dictum, diem, dogmatism, doom, dram, dream, drum, dualism

earthworm, effluvium, egalitarianism, egotism, electrocardiogram, elm, emotionalism, empiricism, endosperm, enthusiasm, epsom, equilibrium, esteem, euphemism, evangelism, experimentalism, expressionism

fanaticism, farm, favoritism, federalism, feudalism, fiefdom, film, firm, foam, forearm, form, formalism, forum, freedom, functionalism, fundamentalism

gallium, galvanism, gem, geocentricism, germ, germanium, gingham, gleam, gloom, glum, graham, gram, groom, gum, gym, gypsum

hailstorm, ham, hansom, harem, harm, headroom, hedonism, helium, helm, hem, heroism, hilum, historicism, hoodlum, hookworm, hooliganism, horsedom, hum, humanism, hypoadrenocorticism, hypothyroidism

iconoclasm, idealism, idiom, ileum, imperialism, indium, individualism, industrialism, interim, interregnum, invalidism, iridium, irredentism, isolationism, item

jam, jejunum, journalism

kibbutzim, kingdom

lanthanum, laudanum, lebensraum, liberalism, linoleum, literalism, logarithm, loom, lunchroom, lyricism

madam, maelstrom, magnetism, magnum, mainstream, malapropism, mannerism, martyrdom, materialism, mausoleum, maxim, maximum, mayhem, mechanism, medium, metabolism, microcosm, microfilm, microorganism, midstream, militarism, millenarianism, millenium, millennium, milligram, minimum, modernism, modicum, mom, momentum, monasticism, moratorium, museum, mushroom, myocardium, mysticism

naebm, nationalism, naturalism, negativism, neutralism, nihilism, nonism, norm, nudism

officialdom, opium, opportunism, opprobrium, optimism, optimum, organism, orgasm, osmium, ostracism

pacifism, paganism, palladium, palm, panjandrum, paradigm, parallelism, paternalism, patriotism, pendulum, perfectionism, pessimism, petroleum, phantom, phloem, photorealism, pianism, pilgrim, plagiarism, planetarium, plasm, platform, platinum, playroom, plum, pluralism, podium, poem, positivism, possum, potassium, pragmatism, pram, premium, primitivism, problem, professionalism, program, progressivism, protoplasm, provincialism, psalm, pseudonym, pseudophloem, pseudynom, psyllium, purism

quantum

radicalism, rainstorm, ram, random, ransom, rationalism, realism, realm, referendum, reform, reformism, relativism, revivalism, rhenium, rheum, rheumatism, rhythm, rim, robotism, romanticism, room, rostrum, rum, rumdum, ruthenium

sadism, sanatorium, sanitarium, sarcasm, scepticism, schism, schoolroom, scream, scrim, seam, secularism, sensationalism, septum, seraphim, serum, sham, showroom, sickroom, skepticism, slipstream, slum, snowstorm, socialism, sodium, solipsism, sonogram, sorghum, spasm, spectrum, squadroom, stadium, stardom, stateroom, steam, stem, sternum, stockroom, stoicism, storeroom, storm, stramonium, stratagem, stratum, stream, substratum, subsystem, sum, supernaturalism, supranationalism, surrealism, swarm, swim, symbolism, symposium, symptom, synchronism, synergism, synonym, system

tandem, tantrum, team, tedium, telegram, term, tetrasodium, theorem, titanium, toadyism, totalitarianism, traditionalism, transom, transvestitism, trim, trisodium, truism

ultimatum, underarm, uniform, unrealism, uranium, urbanism, utopianism

vacuum, vandalism, vasorum, vellum, venom, victim, vigilantism, vocalism

wahtahm, wardroom, whim, william, windstorm, wisdom, worm

xylem