词汇对于学习小语种很重要哦，只有积累了一定的词汇，才能学好并且充分掌握小语种哦。这里小编给大家整理了一篇拉丁语的词汇，希望大家能好好学习。

　　O curas hominum! O quantum est in rebus inane! - Ah, human cares! Ah, how much futility in the world! (Lucilius)
　　O di immortales! - Good heavens! (uttered by Cicero on the Senate floor)
　　O diem praeclarum! - Oh, what a beautiful day!
　　O praeclarum custodem ovium lupum! - An excellent protector of sheep, the wolf! (Cicero)
　　O quam cito transit gloria mundi! - O how quickly passes the glory of the world!
　　O sancta simplicitas! - Oh, holy simplicity! (Jan Hus)
　　O tempora, O mores! - Oh, the times! Oh, the morals! (Cicero)
　　O! Plus! Perge! Aio! Hui! Hem! - Oh! More! Go on! Yes! Ooh! Ummm!
　　Obesa cantavit - The fat lady has sung
　　Obiit (ob.) - He/she died
　　Obiter (ob.) - In passing
　　Obiter dictum - Something said in passing - parenthetical remark
　　Oblitus sum perpolire clepsydras! - I forgot to polish the clocks!
　　Obscurum per obscurius - The obscure by means of the more obscure
　　Obsta principiis - Resist the beginnings - Nip it in the bud
　　Occasio aegre offertur, facile amittitur - Opportunity is offered with difficulty, lost with ease. (Publius Syrus)
　　Occasio facit furem - Opportunity makes a thief
　　Oderint dum metuant - Let them hate provided that they fear. (Seneca)
　　Odi et amo - I hate (her), and I love (her) (Catullus)
　　Odium theologicum - Theological hatred. (a special name for the hatred generated in theological disputes)
　　Olevm addere camino - To pour fuel on the stove adding gasoline to a fire
　　Olevm perdisti - You have lost oil you've wasted your time on this criticism for a misallocation of resources
　　Olim habeas eorum pecuniam, numquam eam reddis: prima regula quaesitus - Once you have their money, you never give it back: the 1st rule of acquisiton
　　Olim - Formerly
　　Omne ignotum pro magnifico est - We have great notions of everything unknown. (Tacitus)
　　Omne initium est difficile - Every beginning is difficult
　　Omne trium perfectum - Everything that comes in threes is perfect
　　Omne tvlit pvnctvm qvi miscvit vtile dvlci - [he] has gained every point who has combined [the] useful [with the] agreeable
　　Omnes aequo animo parent ubi digni imperant - All men cheerfully obey where worthy men rule. (Syrus)
　　Omnes deteriores svmvs licentia - Too much freedom debases us
　　Omnes lagani pistrinae gelate male sapiunt - All frozen pizzas taste lousy
　　Omnes una manet nox - The same night awaits us all. (Horace)
　　Omnes vulnerant, ultima necat - All (hours) wound, the last kills. (inscription on solar clocks)
　　Omnia iam fient quae posse negabam - Everything which I used to say could not happen will happen now. (Ovid)
　　Omnia mea mecum porto - All that is mine, I carry with me. (My wisdom is my greatest wealth) (Cicero)
　　Omnia mihi lingua graeca sunt - It's all Greek to me
　　Omnia mors aequat - Death equals all things
　　Omnia munda mundis - Everything is pure to pure ones
　　Omnia mutantur nos et mutamur in illis - All things change, and we change with them
　　Omnia mutantur, nihil interit - Everything changes, nothing perishes. (Ovid)
　　Omnia mutantur, nos et mutamur in illis - All things are changing, and we are changing with them
　　Omnia vincit amor - Love conquers all
　　Omnia vincit amor; et nos cedamus amori - Love conquers all things; let us too surrender to love. (Vergil)
　　Omnium gatherum - Assortment
　　Omnium rerum principia parva sunt - Everything has a small beginning. (Cicero)
　　Onus probandi - The burden of proof
　　Opere citato (op. cit.) - In the work just quoted
　　Optimis parentibus - To my excellent parents. A common dedication in a book
　　Optimus magister, bonus liber - The best teacher is a good book
　　Opus Dei - The work of God
　　Ora et labora - Pray and work. (St. Benedict)
　　Ora pro nobis - Pray for us
　　Oratvr fit, poeta nascitvr - An orator is made [but] a poet is born
　　Orbes volantes exstare - Flying saucers are real
　　Orbiter dictum/dicta - Said by the way (miscellaneous remarks)
　　Orcae ita - Pretty straightforward
　　Ore rotundo - With full voice
　　Osculare pultem meam! - Kiss my grits!