- instantaneous17
- intercampus22
- interreligious19
- interstimulus20
- intracutaneous21
- intravenous18
- invidious16
- iodous8
- irreligious15
- isochronous18
- isogamous15
- isomorphous20
- isthmus13
- jabirus20
- jacobus23
- jealous18
- jehus17
- jiujitsus29
- jiujutsus30
- joyous18
- judicious24
- jujitsus28
- jujus25
- jujutsus29
- jus13
- kabeljous27
- kagus12
- keratinous16
- kinkajous28
- kudus12
- kudzus22
- kurus11
- laborious14
- lacteous13
- lactiferous19
- lactobacillus26
- laminous14
- landaus11
- languorous16
- lanuginous17
- lapillus15
- lapsus11
- larcenous15
- lascivious19
- lecherous16
- lecythus17
- leguminous19
- lekythus18
- lemniscus18
- lentivirus17
- lepidopterous22
- lepromatous19
- leprous12
- leptocephalus27
- libellous16
- libelous14
- libidinous17
- licentious16
- lichenous17
- lieus7
- ligamentous19
- ligneous13
- limbus14
- limulus14
- lipomatous18
- literatus11
- litigious13
- litmus11
- loculus14
- locus10
- longevous18
- loquacious25
- lotus7
- luaus8
- lubricious19
- lubricous18
- luciferous19
- ludicrous16
- lugubrious19
- lulus9
- luminiferous22
- luminous15
- lupous12
- lupus11
- luscious14
- lustrous11
- lusus8
- luteous10
- luxurious20
- lymphomatous27
- macronucleus25
- macropterous22
- magnanimous22
- magus11
- malarious14
- malicious17
- malleolus16
- malleus13
- malodorous16
- mammatus18
- mandamus17
- manganous17
- manitous13
- manitus12
- manteaus13
- manus10
- marabous15
- marasmus15
- marvellous20
- marvelous18
- meandrous15
- meatus10
- medicamentous25
- medius11
- melanous14
- mellifluous22
- melodious15
- membranous21
- mendacious19
- meningococcus30
- meniscus16
- menus10
- meous9
- mercurous17
- meretricious19
- meritorious15
- mesophyllous25
- metacarpus20
- metalliferous22
- metatarsus14
- metestrus13
- meticulous19
- miaous10
- micaceous19
- microbus18
- micrococcus27
- microfungus25
- microlepidopterous33
- micronucleus25
- microphyllous29
- microporous21
- microsporous22
- microvillous25
- microvillus24
- migrainous17
- milieus12
- minibus15
- minus10
- miraculous19
- miscellaneous23
- mischievous24
- misfocus18
- missus10
- mittimus15
- modiolus14
- modulus14
- modus10
- momentous17
- momus12
- monadelphous24
- monecious17
- monestrous15
- monocotyledonous29
- monoecious18
- monogamous20
- monogynous20
- monophagous23
- monotonous16
- monstrous14
- motorbus15
- mountainous18
- mucilaginous24
- mucinous17
- mucocutaneous26
- mucous14
- mucus13
- multicampus26
- multifarious21
- multiparous20
- multireligious23
- multitudinous22
- mumus13
- mundungus20
- murderous15
- murmurous18
- mus7
- muticous16
- mutinous14
- muumuus17
- mycetomatous24
- mycetophagous29
- mycophagous27
- myelogenous21
- myelomatous21
- myoclonus20
- myomatous18
- myrmecophilous32
- mysterious16
- myxedematous29
- myxomatous26