Dictionary entry

ἄδηλος

G. Abbott-Smith's A Manual Greek Lexicon of the New Testament

ἄ-δηλος, -ον

(< δῆλος), [in LXX: Ps 50 (51):6 (בַּטֻּחוֹת);]

1. unseen, unobserved, not manifest (Ps 50 (51):6): Lk 11:44.

2. uncertain, indistinct: I Co 14:8.†