ἄδηλος ádēlos

Meaning

hidden, figuratively, indistinct

In the King James Version: appear not, uncertain

Derivation: from G1 (Α) (as a negative particle) and G1212 (δῆλος);

Where it is used

• Luke 11:44 Woe to you! For you are like unmarked graves, which men walk over without even noticing.”
• 1 Corinthians 14:8 Again, if the trumpet sounds a muffled call, who will prepare for battle?