תַּחְתִּי
From LSJ
αἱ μέν ἀποφάσεις ἐπί τῶν θείων ἀληθεῖς, αἱ δέ καταφάσεις ἀνάρμοστοι τῇ κρυφιότητι τῶν ἀποῤῥήτων → as concerns the things of the gods, negative pronouncements are true, but positive ones are inadequate to their hidden character
English (Strong)
from תָּ֫חַת; lowermost; as noun (feminine plural) the depths (figuratively, a pit, the womb): low (parts, -er, -er parts, - est), nether (part).