The same tyme was Moses borne, and was a propper [transl. ἀστεῖος (asteîos )] childe in the sight of God, which was norisshed up in his fathers housse thre monethes.
Though unusual in the Dublin area he knew that it was not by any means unknown for desperadoes who had next to nothing to live on to be abroad waylaying and generally terrorising peaceable pedestrians by placing a pistol at their head in some secluded spot outside the city proper  [ …] .
When I realized I was wearing my shirt inside out, I felt a proper fool.
The embassador, Alexeief, was authorized to make all proper protestations of friendship, but to be very cautious not to compromit the dignity of his sovereign.
Conceived in that journey, I was born in space. A child so birthed in desolations, homeless between yestermorrow and noon's midnight must have a proper name.
A proper fisking leaves the reader with a clear understanding that the text so fisked was appallingly wrong in every important respect!
Used in the Beginning of Sentence
Proper bud pruning, green harvests where whole clusters are dumped on the ground to bolster final berry concentration, as well as a myriad of intensive practices between budset and harvest.
Used in the Ending of Sentence
He's gonna do me, Jarvis. I kid you not, this time he's gonna do me proper.
Meaning of proper for the defined word.
Grammatically, this word "proper" is an adjective, more specifically, an adjectives by inflection type. It's also an adverb, more specifically, an uncomparable adverb.