ὅνπερ (honper)
ὅνπερ is an Ancient Greek form of ὅς, meaning “who, which, that (relative); his own”. It is the accusative singular masculine pronoun.
Found 169 times in the Ancient Greek texts on Socratos.
Where it is used
Thucydides, History of the Peloponnesian War 1.33.3: τὸν δὲ πόλεμον, δι’ ὅνπερ χρήσιμοι ἂν εἶμεν, εἴ τις ὑμῶν μὴ οἴεται ἔσεσθαι, γνώμης ἁμαρτάνει καὶ οὐκ αἰσθάνεται τοὺς Λακεδαιμονίους φόβ …
All forms of ὅς (declension table)
Source: Socratos (socratos.org), a free reader for Ancient Greek and Latin. Grammar from the Perseus Treebank and Morpheus; dictionary entries from Liddell-Scott-Jones, A Greek-English Lexicon (Perseus Digital Library, CC BY-SA). Counts are from the texts on Socratos.