Many Latin expressions are used in books and in everyday English speech, and you will certainly find most those phrases listed and translated on my site. However, the existing body of Latin literature, both Classical and Medieval is extremely vast. There are many undiscovered gems of wit and wisdom, so I encourage you to study Latin :) The source for a quote is sometimes indcated, but one must remember that Latin quotations are often used as if they were anonymous maxims of universal wisdom. Unlike the collections of quotes that you will find on some other websites, these lines have been actually looked at more than once by someone who knows Latin. I am sure, however, that some typos have not been fixed, so do not assume that anything you find here is safe and good enough to be tattooed on your person! Always ask a Latinist before using a Latin quote for any permanent purpose.

This site also hosts a plethora of imporant resources about Latin, as well as some other languages. Most notably, there a list of legal Latin maxims. Elsewhere on this site there are Latin phrases used in medicine, heraldry, jewelry engravings, sundials and Latin love poems. There is even a motto generator that lets you create Latin phrases without knowing Latin!

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Ibidem (Ib.) - In the same place. (in a book)

Id certum est quod certum reddi potest - That is certain that can be made certain

Id est (i.e.) - That is to say

Idem quod (i.q.) - The same as

Idem - The same

Iesus Nazarenus Rex Iudaeorum (INRI) - Jesus of Nazareth, King of the Jews

Ignis aurum probat, miseria fortes viros - Life is not a bowl of cherries, or, literally, Fire tests gold; adversity tests strong men

Ignis fatuus - Foolish fire

Ignorantia juris neminem excusat - Ignorance of the law excuses no one

Ignoratio elenchi - An ignorance of proof

Ignotus (ign.) - Unknown

Ille dolet vere, qui sine teste dolet - He mourns honestly who mourns without witnesses. (Martialis)

Ille mi par esse deo videtur - He seems to me to be equal to a god. (Catullus)

Imitatores, servum pecus! - Imitators, you slavish crowd! (Horace)

Imperator/Imperatrix (Imp.) - Emperor/Empress

Imperium et libertas - Empire and liberty. (Cicero)

Imperium in imperio - An empire within an empire, i.e. A fifth column, a group of people within an nation's territory who owe allegiance to some other leader

Imperium - Absolute power

Impossibilium nulla obligatio est - Nobody has any obligation to the impossible. (Corpus Iuris Civilis)

Imprimatur - Let it be printed

Imprimis - In first place

In absentia - In one's absence

In actu - In practice

In aere aedificare - Build (castles) in the air. (St. Augustine)

In aeternum - For eternity

In alio pediculum, in te ricinum non vides - You see a louse on someone else, but not a tick on yourself. (Petronius)

In articulo mortis - At the moment of death

In banco - On the bench

In camera - In private chamber

In capite - In chief

In cauda venenum - In the tail [is the] poison. Watch out for what you don't see

In curia - In court

In distans - At a distance

In dubiis non est agendum - In dubious cases, you should not act

In dubio pro reo - In doubt in favor of the accused. If there is a doubt about guiltiness, the judgement has to be in favour of the accused

In dubio - In doubt

In esse - In existence

In excelsis - In the highest

In extenso - At full length

In extremis - In extremity

In fine - At the end

In flagrante delicto - In the very act of committing an offence

In forma pauperis - In the form of a poor person; in a humble or abject manner

In futuro - In the future

In gremio legis - In the protection of the law

In his ordo est ordinem non servare - In this case the only rule is not obeying any rules

In hoc signo vinces - In this sign, you will be victorious. (Eusebios)

In infinitum - To infinity; without end

In libris libertas - In books (there is) freedom

In limine - On the threshold, at the very outset

In loco parentis - In the place of a parent

In loco - In the place of

In magnis et voluisse sat est - To once have wanted is enough in great deeds. (Propertius)

In media res - In or into the middle of a sequence of events. (Horace)

In medias res - Into the midst of things

In medio stat virtus - Virtue stands in the middle. Virtue is in the moderate, not the extreme position. (Horace)

In medio tutissimus ibis - In the middle of things you will go most safe. (Ovid)

In memoriam - In memory (of)

In necessariis unitas, in dubiis libertas, in omnibus caritas - In necessary things unity, in doubtful things liberty, in all things charity

In nomine Domini - In the name of the Lord

In nomine Patris et Filii et Spiritus Santi - In the name of the Father and of the Son and of the Holy Spirit

In nubibus - In the clouds

In nuce - In a nutshell

In omnia paratus - Prepared for all things

In ovo - In the egg

In pace - In peace

In pace, ut sapiens, aptarit idonea bello - In peace, like a wise man, he appropriately prepares for war

In pari materia - Of like kind

In partibus infidelium - In parts inhabited by unbelievers

In parvo - In miniature

In perpetuum - For ever

In personam - Against the person

In pleno - In full

In pontificalibus - In the proper vestments of a pope or cardinal

in posse - In possibility

In posterum - Till the next day

In praesenti - At the present time

In principio - In the beginning

In propria persona - In person

In quaestione versare - To be under investigation

In re - Refering to

In rem - Against the matter (property)

In rerum natura - In the nature of things

In saecula saeculorum - For ages of ages forever

In se - In itself

In silvam ne ligna feras - Don't carry logs into the forest. (Horace)

In situ - In position

In specie - In kind; (a) in its own form and not in an equivalent (b) in coins and not in paper money

In spiritu et veritate - In spirit and truth. (Versio Vulgata)

In statu quo - In the same state

In terrorem - As a warning; in order to terrify others

In totidem verbis - In so many words

In toto - As a whole, absolutely, Completely

In transitu - In passing, on the way

In usu - In use

In utero - In the womb

In vacuo - In a vacuum or empty space

In vinculis etiam audax - In chains yet still bold (free)

In vino veritas - The truth is in wine. (A drunk person tells the truth)

In virtute sunt multi ascensus - There are many degrees in excellence. (Cicero)

In vitro - In a test tube (literally glass)

In vivo - In the living (thing)

Incipit - Begin here

Incredibile dictu - Incredible to say

Index librorum prohibitorum - Official list of forbidden books not to be read by Catholics

Indulgentiam quaeso - I ask your indulgence

Infinitus est numerus stultorum - Infinite is the number of fools

Infra dignitatem (dig.) - Undignified; beneath one's dignity

Infra - Below, underneath

Inhumanitas omni aetate molesta est - Inhumanity is harmful in every age. (Cicero)

Iniqua nunquam regna perpetuo manent - Stern masters do not reign long. (Seneca Philosophus)

Iniuria non excusat iniuriam - One wrong does not justify another

Insanabile cacoethes scribendi - An incurable passion to write. (Juvenal)

Insculpsit - He/she engraved it

Integer vitae scelerisque purus - Blameless of life and free from crime

Intellectum valde amat - Love the intellect strongly. (St. Augustine)

Intelligenti pauca - Few words suffice for he who understands

Intelligo me intelligere - I understand that I understand. (St. Augustine)

Inter alia - Among other things

Inter alios - Amongst other people

Inter arma silent leges - In time of war, laws are silent

Inter caecos regnat strabo - Among blinds the squinting rules. (Erasmus)

Inter canum et lupum - Between a dog and a wolf

Inter nos - Between ourselves

Inter partes - Made between two parties

Inter se - Between themselves

Inter spem et metum - Between hope and fear

Inter vivos - Between living (people)

Interfice errorem, diligere errantem - Kill the sin, love the sinner. (St. Augustine)

Interregnum - Period between rules anarchy, lawlessnes

Intra muros - Within the walls

Intra vires - Within the power

Inventas vitam iuvat excoluisse per artes - Let us improve life through science and art. (Vergil)

Ipsa quidem pretium virtus sibi - Virtue is its own reward

Ipsa scientia potestas est - Knowledge itself is power. (Bacon)

Ipsissima verba - The exact words

Ipso facto - By that very fact

Ipso iure - By operation of the law

Ipsus dixit - He himself said it

Ira furor brevis est - Anger is a brief insanity. (Horace)

Ire fortiter quo nemo ante iit - To boldly go where no man has gone before. (Star Trek)

Ita est - Yes./It is so

Ite, missa est - Go, the Mass is finished

Iubilate Deo - Rejoice in God

Iunctis viribus - By united efforts

Iure divino - By divine law

Iure humano - By human law

Ius civile - Civil law

Ius est ars boni et aequi - Law is the art of the good and the just

Ius gentium - Right of tribes law of nations

Ius gentium - The law of nations

Ius primae noctis - The right of the first night

Iustitia omnibus - Justice for all