αἰνιγματώδης
From LSJ
Κύριε, βοήθησον τὸν δοῦλον σου Νῖλον κτλ. → Lord, help your slave Nilos ... (mosaic inscription from 4th-cent. church in the Negev)
English (LSJ)
ες,
A riddling, dark, A. Supp.464; ῥηματίσκια, of the Heracliteans, Pl.Tht.180a; χρησμός D.S.32.10; of persons, Max.Tyr.38.4. Adv. -δῶς Arist.Rh.1441b22, Pl.Chrm.164e (Comp.), etc.