M
Magister mundi sum! - I am the master of the universe!
Magna cum laude - With high honor
Magnas inter oper inops - A pauper in the midst of wealth. (Horace)
Male parta male dilabuntur - What has been wrongly gained is wrongly lost. (Ill-gotten gains seldom prosper.) (Cicero)
Malum consilium quod mutari non potest - It's a bad plan that can't be changed. (Publilius Syrus)
Mater artium necessitas - Necessity is the mother of invention
Materiam superabat opus - The workmanship was better than the subject matter. (Ovid)
Me fallit - I do not know
Me iudice - (I being judge) in my judgement
Me transmitte sursum, caledoni! - Beam me up, Scotty!
Mea culpa - My fault
Mea culpa - My mistake
Mea mihi conscientia pluris est quam omnium sermo - My conscience means more to me than all speech. (Cicero)
Medice, cura te ipsum! - Physician, heal thyself! (Versio Vulgata)
Medici graviores morbos asperis remediis curant - Doctors cure the more serious diseases with harsh remedies. (Curtius Rufus)
Medicus curat, natura sanat - The physician treats, nature cures
Medio tutissimus ibis - You will go safest in the middle (Moderation in all things.)(Ovid)
Melius est praevenire quam praeveniri - Better to forestall than to be forestalled
Melius frangi quam flecti - It is better to break than to bend
Melius tarde, quam nunquam - Better late than never
Mellita, domi adsum - Honey, I'm home
Mendacem memorem esse oportet - A liar needs a good memory. (Quintilianus)
Mens agitat molem - The mind moves the matter. (Vergil)
Mens regnum bona possidet - An honest heart is a kingdom in itself. (Seneca)
Mens sana in corpore sano - A sound mind in a sound body. (Juvenalis)
Meum pactum dictum - My word is my bond
Mihi cura futuri - My concern is the future
Mihi ignosce. Cum homine de cane debeo congredi - Excuse me. I've got to see a man about a dog
Minime senuisti! - You haven't aged a bit!
Minus habens - Absentminded
Mirabile dictu - Wonderful to say/relate. (Vergil)
Modus Operandi - Way of operating
Mors ultima linea rerum est - Death is everything's final limit. (Horace)
Multi famam, conscientiam pauci verentur - Many fear their reputation, few their conscience. (Pliny)
Multis post annis - Many years later
Multum in parvo - Much in little
Multun, non multa - Much, not many (quality not quantity)
Munit haec et altera vincit - One defends and the other conquers
Mus uni non fidit antro - A mouse does not rely on just one hole. (Plautus)
Musica delenit bestiam feram - Music soothes the savage beast
Mutatis mutandis - What was to be changed having been changed