proprio-

a combining form meaning “one's own,” used in the formation of compound words: proprioceptive.

Origin of proprio-

combining form representing Latin proprius one's own, special, particular, proper

motu proprio

[ moh-too proh-pree-oh ]

/ ˈmoʊ tu ˈproʊ priˌoʊ /

any of certain documents issued by the pope without counsel from others.

literally, of one's own accord

proprio motu

[ praw-pri-oh moh-too; English proh-pree-oh moh-too ]

/ ˈprɔ prɪˌoʊ ˈmoʊ tu; English ˈproʊ priˌoʊ ˈmoʊ tu /

by one's own volition; on one's own initiative.

Infectores qui alienum colorem in lanam conficiunt, offectores qui proprio colori novum officiunt.

The Wonders of Pompeii |Marc Monnier
Foreign canon law never bound (so it has been taught) proprio vigore.

Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 2 |Various
Well, I'm in the very dickens of a quandary—son' proprio nel dickens d'un imbarazzo.

The Cardinal's Snuff-Box |Henry Harland
Quicquid praeconialiter egeris, proprio matrimonio dignissimus aestimaris.'

The Letters of Cassiodorus |Cassiodorus (AKA Magnus Aurelius Cassiodorus Senator)

Archilochum, for instance, according to the Roman writer, proprio rabies armavit iambo.

The Girl on the Boat |Pelham Grenville Wodehouse

motu proprio

/ (ˈməʊtuː ˈprəʊprɪˌəʊ) /

an administrative papal bull

Latin: of his own accord