A

　　A bene placito - At one's pleasure

　　A capite ad calcem - From head to heel

　　A cappella - In church [style] - i.e. Vocal music only

　　A contrario - From a contrary position

　　A cruce salus - From the cross comes salvation

　　A Deo et Rege - From God and the King

　　A fortiori - With yet stronger reason

　　A fronte praecipitium a tergo lupi - A precipice in front, wolves behind (between a rock and a hard place)

　　A mari usque ad mare - From sea to sea (Motto of Canada)

　　A mensa et thoro - From board and bed (legal separation)

　　A pedibus usque ad caput - From feet to head

　　A posse ad esse - From possibility to actuality

　　A posteriori - From what comes after. Inductive reasoning based on observation, as opposed to deductive, or a priori

　　A priori - From what comes before

　　A verbis ad verbera - From words to blows

　　Ab absurdo - From the absurd (establishing the validity of your argument by pointing out the absurdity of your opponent's position)

　　Ab aeterno - From the beginning of time

　　Ab asino lanam - Wool from an ass, blood from a stone impossible

　　Ab hinc - From here on

　　Ab imo pectore - From the bottom of the chest. (from the heart) (Julius Caesar)

　　Ab incunabulis - From the cradle

　　Ab initio - From the beginning

　　Ab intestato - Having made no will

　　Ab origine - From the origin

　　Ab ovo usque ad mala - From the egg right to the apples (From start to finish) (Horace)

　　Ab ovo - From the egg

　　Ab urbe condita - From the foundation of the city. (Rome)

　　Ab/Ex uno disce omnes - From one person, learn all people

　　Abiit, excessit, evasit, erupit - He has left, absconded, escaped and disappeared

　　Absente reo - In absence of the defendant

　　Absit invidia - No offence intended

　　Absit omen - May the omen be absent. (may this not be an omen)

　　Absum! - I'm outta here!

　　Abusus non tollit usum - Wrong use does not preclude proper use

　　Abutebaris modo subjunctivo denuo - You've been misusing the subjunctive again

　　Abyssus abyssum invocat - Hell calls hell; one mistep leads to another

　　Accipere quam facere praestat injuriam - It is better to suffer an injustice than to do an injustice

　　Acta est fabula, plaudite! - The play is over, applaud! (Said to have been emperor Augustus' last words)

　　Acta non verba - Action not words

　　Acta sanctorum - Deeds of the saints

　　Actus reus - Wrongful act - as opposed to mens rea - the wrongful intention or guilty mind

　　Ad absurdum - To the point of absurdity

　　Ad acta - To archives. Not actual any more

　　Ad alta - To the summit

　　Ad astra per aspera - To the stars through difficulty

　　Ad astra - To the stars

　　Ad augusta per angusta - To high places by narrow roads

　　Ad captandum vulgus - To appeal to the crowd -- often used of politicians who make false or insincere promises appealing to popular interest

　　Ad clerum - To the clergy

　　Ad eundem gradum - To the same level

　　Ad eundem - Of admission to the same degree at a different university

　　Ad eundum quo nemo ante iit - To boldly go where no man has gone before

　　Ad fontes - To the sources (motto of Renaissance Humanism)

　　Ad fundum - To the bottom / To the end (said during a generic toast, like bottoms up!)

　　Ad hoc - For a particular purpose. (improvised, made up in an instant)

　　Ad hominem - Appealing to a person's physical and emotional urges, rather than her or his intellect

　　Ad honorem - In honour. Honour not baring any material advantage

　　Ad idem - Of the same mind

　　Ad infinitum - To infinity without end

　　Ad interim - For the meantime

　　Ad libitum (Acronym 'ad lib') - At one's pleasure

　　Ad Libitur - As Desired

　　Ad limina apostolorum - To the thresholds of the Apostles

　　Ad litem - For a lawsuit or action

　　Ad locum - At the place

　　Ad lucem - Towards the light (motto of the University of Lisbon)

　　Ad maiorem dei gloriam (AMDG) - For the greater glory of God

　　Ad multos annos - To many years!, i.e. Many happy returns!

　　Ad nauseum - To the point of making one sick

　　Ad perpetuam rei memoriam - For the perpetual remembrance of the thing

　　Ad praesens ova cras pullis sunt meliora - Eggs today are better than chickens tomorrow (a bird in the hand is worth two in the bush)

　　Ad referendum - Subject to reference

　　Ad rem - To the point

　　Ad valorem - By the value, e.g. Ad valorem tax

　　Ad vitam aeternam - For all time

　　Ad vitam paramus - We are preparing for life

　　Ad vitam - For life

　　Addendum - A thing to be added

　　Adeste Fideles - Be present, faithful ones

　　Adsum - Here! present!

　　Adversus incendia excubias nocturnas vigilesque commentus est - Against the dangers of fires, he (Augustus) conceived of the idea of night guards and watchmen

　　Adversus solem ne loquitor - Don't speak against the sun (don't waste your time arguing the obvious)

　　Advocatus diaboli - The devil's advocate

　　Aegrescit medendo - The disease worsens with the treatment. The remedy is worse than the disease

　　Aegri somnia - A sick man's dreams (Horace)

　　Aegroto, dum anima est, spes esse dicitur - It is said that for a sick man, there is hope as long as there is life

　　Aequam memento rebus in arduis servare mentem - Remember when life's path is steep to keep your mind even. (Horace)

　　Aeronavis abstractio a prestituto cursu - Hijacking

　　Aetatis (aet.) - Age

　　Aeternum vale - Farewell forever

　　Affidavit - A sworn written statement usable as evidence in court

　　Age quod agis - Do what you do well, pay attention to what you are doing

　　Age. Fac ut gaudeam - Go ahead. Make my day!

　　Agenda - Things to be done

　　Agnus Dei - The Lamb of God

　　Aio, quantitas magna frumentorum est - Yes, that is a very large amount of corn

　　Alea iacta est - The die has been cast. (Caesar)

　　Alias - Otherwise

　　Alibi - Elsewhere

　　Aliena nobis, nostra plus aliis placent - Other people's things are more pleasing to us, and ours to other people. (Publilius Syrus)

　　Alis volat propiis - She flies with her own wings (state motto of Oregon)

　　Alma Mater - Nourishing mother. (One's old school or university)

　　Alter ego - Other 'I' or 'Other Self'

　　Alter ipse amicus - A friend is another self

　　Alterum ictum faciam - I'm going to take a mulligan

　　Altissima quaeque flumina minimo sono labi - The deepest rivers flow with the least sound. (still waters run deep)

　　Alumnus - Nursling (former pupil)

　　Amantes sunt amentes - Lovers are lunatics

　　Amantium irae amoris integratio est - The quarrels of lovers are the renewal of love. (Terence)

　　Amare et sapere vix deo conceditur - Even a god finds it hard to love and be wise at the same time

　　Amat victoria curam - Victory favors those who take pains

　　Amicitiae nostrae memoriam spero sempiternam fore - I hope that the memory of our friendship will be everlasting. (Cicero)

　　Amicule, deliciae, num is sum qui mentiar tibi? - Baby, sweetheart, would I lie to you?

　　Amicus certus in re incerta cernitur - A true friend is discerned during an uncertain matter

　　Amicus curiae - Friend of the court

　　Amicus humani generis - A friend of the human race (philanthropist)

　　Amicus verus est rara avis - A true friend is a rare bird

　　Amor animi arbitrio sumitur, non ponitur - We choose to love, we do not choose to cease loving. (Syrus)

　　Amor caecus est - Love is blind

　　Amor est vitae essentia - Love is the essence of life. (Robert B. Mackay)

　　Amor ordinem nescit - Love does not know order. (St. Jerome)

　　Amor patriae - Love of country

　　Amor platonicus - Platonic love

　　Amor tussisque non celantur - Love, and a cough, are not concealed. (Ovid)

　　Amor vincit omnia - Love conquers all. (Virgil)

　　Amoto quaeramus seria ludo - Joking aside, let us turn to serious matters. (Horace)

　　An nescis, mi fili, quantilla sapientia mundus regatur? - Don't you know then, my son, how little wisdom rules the world?

　　Anguis in herba - A snake in the grass. A treacherous person. (Vergil)

　　Anicularum lucubrationes - Old wives' tales

　　Animadvertistine, ubicumque stes, fumum recta in faciem ferri? - (At a barbeque) Ever noticed how wherever you stand, the smoke goes right into your face?

　　Animis opibusque parati - Prepared in minds and resources (ready for anything)

　　Animus facit nobilem - The spirit makes (human) noble

　　Anno (an.) - Year

　　Anno domini (AD) - In the year of the Lord

　　Anno hegirae (AH) - In the year of the hegira

　　Anno mundi - In the year of the world

　　Anno regni - In the year of reign

　　Anno urbis conditae (AUC) - From the year of founding of the city (Rome)

　　Annuit coeptis - God has favored us

　　Annus bisextus - Leap year

　　Annus horribilis - A horrible year

　　Annus mirabilis - Year of wonders

　　Ante litteram - Before the letter

　　Ante meridiem (a.m.) - Before midday

　　Ante mortem - Before death

　　Ante prandium (A.p.) - Before a meal

　　Ante - Before

　　Antebellum - Before the war

　　Antiquis temporibus, nati tibi similes in rupibus ventosissimis exponebantur ad necem - In the good old days, children like you were left to perish on windswept crags

　　Anulos qui animum ostendunt omnes gestemus! - Let's all wear mood rings!

　　Apage Satanas - Begone, Satan

　　Appareo Decet Nihil Munditia? - Is It Not Nifty?

　　Apudne te vel me? - Your place or mine?

　　Aqua fortis - Nitric acid

　　Aqua pura - Pure water

　　Aqua vitae - Water of life (brandy)

　　Aquila non captat muscas - The eagle doesn't capture flies (don't sweat the small things)

　　Arbiter elegantiae - Judge in matters of taste

　　Arcana imperii - Secrets of the empire

　　Arduum sane munus - A truly arduous task

　　Arguendo - For the sake of argument

　　Argumentum ad hominem - An argument against the man. Directing an argument against an opponent's character rather than the subject at hand

　　Argumentum ad ignorantiam - Arguing from ignorance

　　Armis Exposcere Pacem - They demanded peace by force of arms. (An inscription seen on medals)

　　Ars gratia artis - Art for art's sake. (motto of MGM)

　　Ars longa, vita brevis - Art (work) is long, but life is short

　　Ars sine scienta nihil est - Art without science is nothing. (I would also claim that the opposite is true)

　　Artium baccalaureus - Bachelor of Arts (BA)

　　Artium magister - Master of Arts (MA)

　　Ascendo tuum - Up yours

　　Asinus asinum fricat - The ass rubs the ass. (Conceited people flatter each other about qualities they do not possess)

　　Aspice, officio fungeris sine spe honoris amplioris - Face it, you're stuck in a dead end job

　　Aspirat primo Fortuna labori - Fortune smiles upon our first effort. (Virgil)

　　Assiduus usus uni rei deditus et ingenium et artem saepe vincit - Constant practice devoted to one subject often outdues both intelligence and skill. (Cicero)

　　Astra inclinant, non necessitant - The stars incline; they do not determine

　　Astra non mentiuntur, sed astrologi bene mentiuntur de astris - The stars never lie, but the astrologs lie about the stars

　　Aude sapere - Dare to know

　　Audaces fortuna iuvat - Fortune favors the bold. (Virgil)

　　Audere est facere - To dare is to do. (Motto of Tottenham Hotspur)

　　Audi et alteram partem - Hear the other side too

　　Audiatur et altera pars! - Let us hear the opposite side!

　　Audio, video, disco - I hear, I see, I learn

　　Auget largiendo - He increases by giving liberally

　　Aura popularis - The popular breeze. (Cicero)

　　Aurea mediocritas - The golden mean. (an ethical goal; truth and goodness are generally to be found in the middle.) (Horace)

　　Auribus tenere lupum - I hold a wolf by the ears. (I am in a dangerous situation and dare not let go.) (Terence)

　　Aurora australis - The Southern lights

　　Aurora borealis - The Northern lights

　　Aurora Musis amica - Dawn is friend of the muses. (Early bird catches the worm.)

　　Aut Caesar aut nihil - Caesar or nothing i.e., all or nothing

　　Aut disce aut discede - Either learn or leave

　　Aut insanit homo, aut versus facit - The fellow is either mad or he is composing verses. (Horace)

　　Aut viam inveniam aut faciam - I will either find a way or make one

　　Aut vincere aut mori - Either conquer or die

　　Auxilio ab alto - By help from on high

　　Avarus animus nullo satiatur lucro - A greedy mind is satisfied with no (amount of) gain

　　Ave atque vale - Hail and farewell. (Catullus)

　　Ave caesar! Morituri te salutamus - Hail Caesar! We who are about to die salute you. (gladiators before the fight)

　　Ave maria - Hail Mary