ῥʼ (rh)
ῥʼ is an Ancient Greek form of ἄρα, meaning “then, so, as it seems (inferential)”. It is the particle.
It can also be a form of ἆρα, “then, so (marks a question or inference)”.
Found 501 times in the Ancient Greek texts on Socratos.
Where it is used
Apollonius Rhodius, Argonautica 1.126: τὴν ὁδόν, ᾗ ζωὸν φέρε κάπριον, ὅς ῥʼ ἐνὶ βήσσῃς
Theocritus, Εἰδύλλια 4.58: εἴπʼ ἄγε μʼ ὦ Κορύδων, τὸ γερόντιον ἦ ῥ’ ἔτι μύλλει
Plutarch, Numa 4.7: … οντας θεοὺς ὁμιλεῖν ἐπὶ διδασκαλίᾳ καὶ παραινέσει τῶν βελτίστων, ποιηταῖς δὲ καὶ λυρικοῖς μινυρίζουσιν, εἴπερ ρ ἄρα, χρῆσθαι παίζοντας;
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.