optimus intèrpres rèrum ùsus - custom is the best interpretation of things.

opìnio jùris gentium - international legal views.

agreed pact quae néque - згоди, якы... .

pàcta non obligant nis gèntes inter quas ìnita - contracts do not bind anyone except the persons who participate in them.

pacta tertiis nec nocent nec prosunt - agreements do not harm or benefit third parties.

par in pàrem impèrium non habet - an equal has no power over an equal.

pàri pàssu - the same.

pars pro tòto - a part representing the whole.

per còntra - opposite, on the contrary.

per extensum - completely, in detail.