| quaero, quaerere, quaesivi, quaesitus | (verb) | look for |
| quantus, quanta, quantum | (adjective) | how much |
| queror, queri, questus | (verb) | complain about |
| qui, quae, quod | (pronoun & adjective) | who, which, that; which, what |
| qui | (interrogative pronoun) | who |
| quidam, quaedam, quiddam | (pronoun) declined like the relative pronoun plus -dam, except that the neuter nominative, accusative, and vocative singular are quid | a certain one pl., some |
| quippe | (adverb) (conjunction) | certainly, of course for in fact, because, since |
| quis, quid | (pronoun) | who? what? |
| quisque, quaeque, quodque (quicque/quidque) | (adjective) | each, every, everybody, everything |
| ratio, rationis | (noun, f.) | manner, fashion, reason |
| recido, recidere, recepi, receptus | (verb) | recoil, fall |
| recipio, recipere, recepi, receptus | (verb) | take back, receive |
| recupero, recuperare, recuperavi, recuperatus | (verb) | recover, get back |
| recuso, recusare, recusavi, recusatus | (verb) | refuse, reject |
| reddo, reddere, reddidi, reditus | (verb) | return, restore |
| reduco, reducere, reduxi, reductus | (verb) | lead back |
| refero, referre, retuli, relatus | (verb) conjugated like fero | report, bring back |
| regina, reginae | (noun, f.) | queen |
| regio, regionis | (noun, f.) | region, boundary |
| regno, regnare, regnavi, regnatus | (verb) | rule |
| regnum, regni | (noun, n.) | kingdom |
| rego, regere, rexi, rectus | (verb) | rule |
| relinquo, relinquere, reliqui, relictus | (verb) | leave, leave behind |
| reliquus, reliqua, reliquum | (adjective) | remaining, rest of |
| reperio, reperire, repperi, repertus | (verb) | find, discover |
| reporto, reportare, reportavi, reportatus | (verb) | carry back, bring back |
| res publica, res publicae | (noun f.) | public affairs, politics, the state, the republic, common good |
| res, rei | (noun, f.) | thing, matter, affair |
| rescisco, resciscere, rescii, rescitus | (verb) | learn, find out |
| restituo, restituere, restitui, restitutus | (verb) | replace, restore, put right again |
| retineo, retinere, retinui, retentus | (verb) | keep back, retain |
| revertor, reverti, reversus | (verb) | turn back, return |
| rex, regis | (noun, m.) | king |
| ripa, ripae | (noun, f.) | bank (of a river) |
| robustus, robusta, robustum | (adjective) | strong, robust |
| rogo, rogare, rogavi, rogatus | (verb) | ask |
| sacerdos, sacerdotis | (noun, m./f.) | priest, priestess |
| sagitta, sagittae | (noun, f.) | arrow |
| sagittarius, sagittarii or sagittari | (noun, m.) | archer |
| salus, salutis | (noun, f.) | health, safety |
| saluto, salutare, salutavi, salutatus | (verb) | greet, welcome |
| salvus, salva, salvum | (adjective) | safe, well |
| sancio, sancire, sanxi, sanctus | (verb) | consecrate |
| sapientia, sapientiae | (noun, f.) | wisdom |
| satis | (noun, n.) spelling is the same in all cases | enough |
| saxum, saxi | (noun, n.) | stone, rock |
| scio, scire, scivi, scitus | (verb) | know |
| scipio, scipionis | (noun m.) | ceremonial rod, baton |
| scribo, scribere, scripsi, scriptus | (verb) | write |
| scriptum, scripti | (noun n.) | writing, book, work |
| senatus, senatus | (noun, m.) | senate |
| senex, senis | (adjective) | old, aged |
| sensus, sensus | (noun, m.) | sense, sensation, feeling |
| sentio, sentire, sensi, sensus | (verb) | feel, perceive, realize |
| septimana, septimanae | (noun, f.) | week |
| sequor, sequi, secutus | (verb) | follow |
| sero, serere, sevi, satus | (verb) | plant |
| serpens, serpentis | (noun, f.) | snake, serpent |
| servo, servare, servavi, servatus | (verb) | save, preserve |
| servus, servi | (noun, m.) | slave, servant |
| severitas, severitatis | (noun, f.) | severity, strictness |
| signum, signi | (noun, n.) | signal, standard |
| silva, silvae | (noun, f.) | forest, woods |
| similis, simile | (adjective) | like |
| simulacrum, simulacri | (noun, n.) | likeness, image, portrait, statue, phantom, ghost (idol) |
| simulo, simulare, simulavi, simulatus | (verb) | pretend |
| sinistrus, sinistra, sinistrum | (adjective) | left |
| socius, socii or soci | (noun, m.) | ally, comrade |
| sol, solis | (noun, m.) | sun |
| solus, sola, solum | (adjective) | alone, only |
| somnus, somni | (noun, m.) | sleep |
| soror, sororis | (noun, f.) | sister |
| specto, spectare, spectavi, spectatus | (verb) | look at, watch |
| spero, sperare, speravi, speratus | (verb) | hope |
| spes, spei | (noun, f.) | hope |
| spira, spirae | (noun, f.) | spiral, coil |
| spiritus, spiritus | (noun, m.) | spirit, breath, inspiration, courage, arrogance |
| stella, stellae | (noun, f.) | star |
| sto, stare, steti, status | (verb) | stand |
| studium, studii or studi | (noun, n.) | zeal, eagerness |
| sum, esse, fui, futurus | (verb) | be |
| summus, summa, summum | (adjective) | greatest, highest, top of |
| superbus, superba, superbum | (adjective) | proud |
| superior, superius | (adjective) comparative of superbus | higher, past, preceding |
| supero, superare, superavi, superatus | (verb) | surpass, overcome, conquer |
| suscipio, suscipere, suscepi, susceptus | (verb) | take up, undertake |
| suspicio, suspicere, suspexi, suspectus | (verb) | mistrust, suspect |
| suus, sua, suum | (adjective) | his, her, its, their |