ἀνεπίδηλος
From LSJ
ἡμῶν δ' ὅσα καὶ τὰ σώματ' ἐστὶ τὸν ἀριθμὸν καθ' ἑνός, τοσούτους ἔστι καὶ τρόπους ἰδεῖν → whatever number of persons there are, the same will be found the number of minds and of characters
English (LSJ)
ον, not manifest or not observable, Ptol.Harm.1.4.
Spanish (DGE)
-ον no observable τόποι Ptol.Harm.10.6.
Greek (Liddell-Scott)
ἀνεπίδηλος: -ον, ὁ μὴ ἐπίδηλος, ὁ μὴ φανερός, ἀπαρατήρητος, Πτολ. Μουσ. 1. 4.