R

Radicitus, comes! - Really rad, dude!
Radix lecti - Couch potato
Radix omnium malorum est cupiditas - The love of money is the root of all evil. Avarice is the problem, money itself is not evil
Raptus regaliter - Royally screwed
Rara avis - A rare bird, i.e. An extraodinary or unusual thing. (Juvenal)
Ratio decidendi - The reason for the decision
Ratio et consilium propriae ducis artes - Reason and deliberation are the proper skills of a general
Ratio legis est anima legis - The reason of the law is the soul of the law
Re vera, cara mea, mea nil refert - Frankly my dear, I don't give a damn
Re vera, potas bene - Say, you sure are drinking a lot
Re - Concerning
Recedite, plebes! Gero rem imperialem! - Stand aside plebians! I am on imperial business!
Recto - On the right
Redde Caesari quae sunt Caesaris - Render unto Caesar the things that are Caesar's
Redivivus - Come back to life
Redolet lvcernam - [it] smells of the lamp - critical remark that one worked too hard on something
Reductio ad absurdum - Reduction to the absurd. (proving the truth of a proposition by proving the falsity of all its alternatives)
Referendum - Something to be referred
Regina - Queen
Regnat non regitur qui nihil nisi quod vult facit - He is a king and not a subject who does only what he wishes. (Syrus)
Regnat populus - Let the People rule
Relata refero - I tell what I have been told. (Herodotos)
Religious loci - The (religious) spirit of the place
Rem tene, verba sequentur - Keep to the subject and the words will follow. (Cato Senior)
Repetitio est mater memoriae/ studiorum/ - Repetition is the mother of memory/studies
Requiescat in pace (RIP) - May he/she rest in peace
Rerum concordia discors - The concord of things through discord. (Horace)
Res firma mitescere nescit - A firm resolve does not know how to weaken
Res gestae - Things done
Res in cardine est - The matter is on a door hinge things are balanced on a knife's edge
Res inter alios - A matter between others it's not our busines
Res ipsa loquitur - The thing speaks for itself
Res judicata - Thing already judged upon
Res melius evinissent cum coca - Things go better with Coke
Res publica - The public thing
Res severa est verum gaudium - True joy is a serious thing. (Seneca)
Res tantum valet quantum vendi potest - A thing is worth only what someone else will pay for it
Respice finem - Look to the end
Respice post te, mortalem te esse memento - Look around you, remember that you are mortal. (Tertullianus)
Respice, adspice, prospice - Examine the past, examine the present, examine the future (look to the past, the present, the future)
Respondeat superior - Let the superior answer (a supervisor must take responsibility for the quality of a subordinate's work)
Resurgam - I shall rise again
Revelare pecunia! - Show me the money!
Revera linguam latinam vix cognovi - I don t really know all that much Latin
Rex non potest peccare - The king cannot sin
Rex regnant sed non gubernat - The king reigns but does not govern
Rex - King
Rident stolidi verba latina - Fools laugh at the Latin language. (Ovid)
Ridentem dicere verum quid vetat? - What forbids a laughing man from telling the truth? (Horace)
Rigor mortis - The rigidity of death
Risu inepto res ineptior nulla est - There is nothing more foolish than a foolish laugh. (Catullus)
Risus abundat in ore stultorum - Abundant laughs in the mouth of the foolish - too much hilarity means foolishness
Roma locuta est. Causa finita est - Rome has spoken. The cause is finished
Romani ite domum - Romans go home!
Romani quidem artem amatoriam invenerunt - You know, the Romans invented the art of love
Rosa rubicundior, lilio candidior, omnibus formosior, semper in te glorior - Redder than the rose, whiter than the lilies, fairer than everything, I will always glory in thee
Rumores volant. / Rumor volat - Rumors fly. / Rumor flies