A B C D E F G H I L M N O P Q R S T U V
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! - O the times, O the customs! (Cicero)
O! Plus! Perge! Aio! Hui! Hem! - Oh! More! Go on! Yes! Ooh! Ummm!
Obesa cantavit - The fat lady has sung
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
Omnes aequo animo parent ubi digni imperant - All men cheerfully obey where worthy men rule. (Syrus)
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. (Cicero)
Omnia mors aequat - Death equals all things
Omnia mutantur, nihil interit - Everything changes, nothing perishes. (Ovid)
Omnia mutantur nos et mutamur in illis - All things change, and we change with them
Omnia vincit amor; et nos cedamus amori - Love conquers all things; let us too surrender to love. (Vergil)
Omnium rerum principia parva sunt - Everything has a small beginning. (Cicero)
Optimus magister, bonus liber - The best teacher is a good book
Ora et labora - Pray and labor. (St. Benedict)
Osculare pultem meam! - Kiss my grits!