ἄπειρα (apeira)
ἄπειρα is an Ancient Greek form of ἄπειρος, meaning “boundless; inexperienced”. It is the accusative plural neuter adjective.
Found 64 times in the Ancient Greek texts on Socratos.
Where it is used
Diogenes Laertius, Vitae philosophorum 9.6.30: Λεύκιππος Ἐλεάτης, ὡς δέ τινες, Ἀβδηρίτης, κατʼ ἐνίους δὲ Μιλήσιος. οὗτος ἤκουσε Ζήνωνος. ἤρεσκε δʼ αὐτῷ ἄπειρα εἶναι τὰ πάντα καὶ εἰς ἄλληλα μεταβάλλειν, τό τε πᾶν εἶναι κενὸν καὶ πλῆρες [σωμάτων]. τούς τε κόσμους γίνεσθ …
Plato, Parmenides 158·2: οὕτω δὴ τὰ ἄλλα τοῦ ἑνὸς καὶ ὅλα καὶ κατὰ μόρια ἄπειρά τέ ἐστι καὶ πέρατος μετέχει. πάνυ γε. οὐκοῦν καὶ ὅμοιά τε καὶ ἀνόμοια ἀλλήλοις τε καὶ ἑαυτοῖς; πῇ δή; ἧι μέν …
All forms of ἄπειρος (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.