| labor, laboris | (noun, m.) | work, toil, labor |
| laboro, laborare, laboravi, laboratus | (verb) | work |
| labyrinthus, labyrinthi | (noun, m.) | labyrinth |
| lacerti, lacertorum | (noun, m. pl.) | brawn, muscle |
| lacertus, lacerti | (noun, m.) | upper arm |
| laetus, laeta, laetum | (adjective) | happy |
| laevus, laeva, laevum | (adjective) | left |
| lana, lanae | (noun, f.) | wool |
| latus, lata, latum | (adjective) | wide |
| laudo, laudare, laudavi, laudatus | (verb) | praise |
| legatus, legati | (noun, m.) | lieutenant, legate |
| legio, legionis | (noun, f.) | legion |
| lego, legere, legi, lectus | (verb) | read |
| lenitas, lenitatis | (noun, f.) | mercy, mildness, gentleness |
| lex, legis | (noun, f.) | law |
| liber, libera, liberum | (adjective) | free |
| liber, libris | (noun, m.) | book |
| libero, liberare, liberavi, liberatus | (verb) | free, set free |
| libido, libidinis | (noun, f.) | desire, passion; willfulness, caprice; lust |
| licentia, licentiae | (noun, f.) | freedom, license; lawlessness, licentiousness |
| lingua, linguae | (noun, f.) | language |
| littera, litterae | (noun, f.) | letter |
| loco, locare, locavi, locatus | (verb) | place, put |
| locus, loci | (noun, m.) sometimes neuter in the plural | place, position |
| longus, longa, longum | (adjective) | long |
| loquor, loqui, locutus | (verb) | say, speak |
| ludus, ludi | (noun, m.) | game |
| luna, lunae | (noun, f.) | moon |
| lupa, lupae | (noun, f.) | wolf |
| lux, lucis | (noun f.) | light |
| magicae artes | (noun, f. pl.) | magic, the magical arts |
| magicus, magica, magicum | (adjective) | magical |
| magnitudo, magnitudinis | (noun, f.) | size, great size; greatness, vastness |
| magnus, magna, magnum | (adjective) | large, great |
| magus, magi | (noun, m.) | magician |
| maiores, maiorum | (noun, m. pl.) | ancestors, forefathers |
| malediceo, maledicere, maledixi, maledictus | (verb) | abuse, curse |
| maledictum, maledicti | (noun, n.) | curse |
| malo, malle, malui | (verb) | prefer |
| malus, mala, malum | (adjective) | bad |
| maneo, manere, mansi, mansus | (verb) | remain, stay |
| manus, manus | (noun, f.) | hand; corps, band, company |
| mare, maris | (noun, n.) | sea |
| maritus, mariti | (noun, m.) | husband |
| mater, matris | (noun, f.) | mother |
| matrimonium, matrimonii or matrimoni | (noun, n.) | marriage |
| medius, media, medium | (adjective) | middle, middle of |
| mehercule! | (interjection) | by Hercules! |
| memoria tenere | (verb) | to remember (literally: "keep by memory" |
| memoria, memoriae | (noun, f.) | memory |
| mens, mentis | (noun, f.) | intelligence, mind, understanding |
| mensa secunda | (noun, f.) | dessert |
| mensa, mensae | (noun, f.) | meal |
| mente captus | insane | |
| metuo, metuere, metui | (verb) | fear, be afraid |
| meus, mea, meum | (adjective) | my, mine |
| miles, militis | (noun, m.) | soldier |
| mille passus | (noun, m.) milia passuum (plural) | a mile literally: a thousand paces |
| ministerium, ministerii or ministeri | (noun, n.) | service, work, employment |
| miser, misera, miserum | (adjective) | wretched, unhappy |
| misereor, misereri, miseritus | (verb) | pity, feel sorry for |
| misericordia, misericordiae | (noun, f.) | sympathy, pity |
| mitto, mittere, misi, missus | (verb) | send |
| modeste | (adverb) | moderately, modestly |
| modus, modi | (noun, m.) | manner, way |
| moneo, monere, monui, monitus | (verb) | warn, advise |
| mons, montis | (noun, m.) | mountain |
| monstro, monstrare, monstravi, monstratus | (verb) | point out, show |
| mora, morae | (noun, f.) | delay |
| morior, mori, mortuus | (verb) | die |
| mors, mortis | (noun, f.) | death |
| mortalis, mortale | (adjective) | mortal |
| moveo, movere, movi, motus | (verb) | move |
| mulier, mulieris | (noun, f.) | woman |
| multitudo, multitudinis | (noun, f.) | great number, multitude |
| multus, multa, multum | (adjective) | much (plural: many) |
| mundus, mundi | (noun m.) | world |
| murus, muri | (noun, m.) | wall |