quid pro quo - this for that⏎
ratio decidendi - reason for the decision⏎
pro per - abbreviation of propria persona, meaning "one's own person"⏎
pro tanto - for so much⏎
quasi - as if⏎
prima facie - at first face⏎
qui tam - abbreviation of qui tam pro domino rege quam pro se ipso in hac parte sequitur, meaning "who pursues in this action as much for the king as himself".⏎
quo ante - as before⏎
per proxima amici - by or through the next friend⏎