3-letter words

hmm, umm

4-letter words

ammo, immy, mumm

5-letter words

ammos, comma, commy, dummy, emmer, emmet, femme, gamma, gammy, gemma, gemmy, gimme, gumma, gummy, hammy, immix, jemmy, jimmy, lemma, mamma, mammy, momma, mommy, mumms, mummy, rammy, rummy, summa, tammy, tommy, tummy, yummy

6-letter words

ammine, ammino, ammono, bammed, bummed, bummer, chammy, chummy, clammy, commas, commie, commit, commix, common, crummy, cummer, cummin, dammar, dammed, dammer, dimmed, dimmer, emmers, emmets, femmes, gammas, gammed, gammer, gammon, gemmae, gemmed, gimmal, gimmie, gramme, gremmy, gummas, gummed, gummer, hammal, hammed, hammer, hemmed, hemmer, hommos, hummed, hummer, hummus, immane, immesh, immies, immune, immure, jammed, jammer, kummel, lammed, lemmas, limmer, lummox, mammae, mammal, mammas, mammee, mammer, mammet, mammey, mammie, mammon, mommas, mummed, mummer, nimmed, plummy, pommee, pommel, pummel, rammed, rammer, rimmed, rimmer, rummer, scummy, shammy, shimmy, simmer, slummy, stemma, stemmy, summae, summas, summed, summer, summit, summon, swimmy, tammie, wammus, whammo, whammy, yammer

7-letter words

ammeter, ammines, ammonal, ammonia, ammonic, bamming, brimmed, brimmer, bummers, bummest, bumming, chummed, clammed, clammer, command, commata, commend, comment, commies, commits, commixt, commode, commons, commove, commune, commute, crammed, crammer, crimmer, crummie, cummers, cummins, dammars, dammers, damming, digamma, dilemma, dimmers, dimmest, dimming, drammed, drummed, drummer, dummied, dummies, flammed, flummox, gammers, gammier, gamming, gammons, gemmate, gemmier, gemmily, gemming, gemmule, gimmals, gimmick, gimmies, glimmer, glommed, glummer, grammar, grammes, gremmie, grimmer, grommet, grummer, grummet, gummata, gummers, gummier, gumming, gummite, gummose, gummous, hammada, hammals, hammers, hammier, hammily, hamming, hammock, hemmers, hemming, hommock, hummers, humming, hummock, immense, immerge, immerse, immixed, immixes, immoral, immunes, immured, immures, jammers, jamming, jemmied, jemmies, jimmied, jimmies, jimminy, krimmer, kummels, lamming, lemmata, lemming, limmers, mammals, mammary, mammate, mammati, mammees, mammers, mammets, mammeys, mammies, mammock, mammons, mammoth, maremma, maremme, mommies, mummers, mummery, mummied, mummies, mummify, mumming, nimming, nummary, plummet, pommels, primmed, primmer, psammon, pummels, rammers, rammier, ramming, rammish, rimmers, rimming, rummage, rummers, rummest, rummier, rummies, scammed, scummed, scummer, shammas, shammed, shammer, shammes, shammos, shimmed, shimmer, simmers, skimmed, skimmer, slammed, slammer, slimmed, slimmer, slummed, slummer, stammel, stammer, stemmas, stemmed, stemmer, stummed, summand, summary, summate, summers, summery, summing, summits, summons, swimmer, tammies, thrummy, tommies, trammed, trammel, trimmed, trimmer, trommel, tsimmes, tummies, tummler, tzimmes, whammed, wommera, yammers, yummier, yummies

8-letter words

aglimmer, ammeters, ammocete, ammonals, ammoniac, ammonias, ammonify, ammonite, ammonium, ammonoid, analemma, bedimmed, brimmers, brimming, chammied, chammies, chummier, chummily, chumming, clammers, clammier, clammily, clamming, commando, commands, commence, commends, comments, commerce, commixed, commixes, commodes, commoner, commonly, commoved, commoves, communal, communed, communes, commuted, commuter, commutes, consomme, crammers, cramming, crimmers, crummier, crummies, degummed, digammas, dilemmas, dilemmic, dimmable, dramming, drammock, drummers, drumming, dummkopf, dummying, engramme, flamming, flummery, gammadia, gammiest, gammoned, gammoner, gemmated, gemmates, gemmiest, gemmules, gimmicks, gimmicky, glimmers, glomming, glummest, grammars, gremmies, grimmest, grommets, grummest, grummets, gummiest, gummites, gummoses, gummosis, hammadas, hammered, hammerer, hammiest, hammocks, hommocks, hommoses, hummable, hummocks, hummocky, hummuses, immanent, immature, immenser, immerged, immerges, immersed, immerses, immeshed, immeshes, imminent, immingle, immixing, immobile, immodest, immolate, immortal, immotile, immunise, immunity, immunize, immuring, jemmying, jimmying, krimmers, lemmings, lummoxes, mammatus, mammered, mammilla, mammitis, mammocks, mammoths, mummying, nummular, ohmmeter, pemmican, plummets, plummier, pommeled, primmest, primming, psammite, psammons, pummeled, rammiest, recommit, rehammer, rehemmed, resummon, roommate, rummaged, rummager, rummages, rummiest, scamming, scammony, scrammed, scrummed, scummers, scummier, scumming, shammash, shammers, shammied, shammies, shamming, shimmers, shimmery, shimmied, shimmies, shimming, simmered, skimmers, skimming, slammers, slamming, slimmest, slimming, slummers, slummier, slumming, stammels, stammers, stemmata, stemmers, stemmery, stemmier, stemming, strummed, strummer, stumming, summable, summands, summated, summates, summered, summerly, summital, summitry, summoned, summoner, swimmers, swimmier, swimmily, swimming, symmetry, teammate, thrummed, thrummer, tommyrot, trammels, tramming, trimmers, trimmest, trimming, trommels, tummlers, uncommon, undimmed, wammuses, whammies, whamming, wommeras, yammered, yammerer, yummiest