G0082–ἄδηλος–adēlos

`Wo to you, scribes and Pharisees, hypocrites, because ye are as the unseen tombs, and the men walking above have not known.'

ἄδηλα, adēla “unmarked,”

for if also an uncertain sound a trumpet may give, who shall prepare himself for battle?

ἄδηλον adēlon “indistinct”