ὑπέργειος
From LSJ
ἐπέμψατε ἀγγέλους τοῖς ἀλλήλοις ὥστε ἔγνωτε τὸν κίνδυνον → you sent messengers to one another so that you knew the danger
English (LSJ)
ον, (γῆ)
A above ground, opp. τρωγλοδυτικός, of animals, Arist.HA488a24, cf. Gp.10.18.8; opp. ὑπόγειος, Poll.5.150; above the horizon, σελήνη Gp.1.7.1; φορά (of the moon) Gal.9.906; ζῴδια Vett.Val.98.9; τὸ ὑ. ἡμισφαίριον Cat.Cod.Astr.4.150.