Quick Definition
ἄδηλος, ον Adj unseen, not obvious
Strong's Definition
from 1 (as a negative particle) and 1212; hidden, figuratively, indistinct
KJV Usage: appear not, uncertain
UBS Dictionary of the Greek New Testament
adjc. | -ον | ἀ- + δηλόω
24.95 · Sensory Events and States · General Sensory Perception
not evident, not perceived, unseen, unmarked pertaining to not being perceived Though in Greek ἄδηλος may designate anything which is unperceived by any of the senses, in LUK 11:44 the most evident sense involved would be sight, and therefore one may translate ‘because you are like graves that cannot be seen.’
UBS Dictionary of the Greek New Testament © United Bible Societies, licensed CC BY-SA 4.0.
Thayer's Greek Lexicon
ἄδηλος, -ov, (δῆλος), not manifest: Lk. xi. 44; indistinct, uncertain, obscure: φωνή, 1 Co. xiv. 8. (In Grk. auth. fr. Hes. down.) [Cf. d7)os,fin.; Schmidt ch. 130.]
Mounce Concise Greek Dictionary
ἄδηλος adēlos 2x
not apparent or obvious; uncertain, not distinct, Lk. 11:44; 1 Cor. 14:8*
Abbott-Smith Greek Lexicon
ἄ-δηλος, -ον
(< δῆλος), [in LXX: Ps 50 (51):6 (בַּטֻּחוֹת);]
unseen, unobserved, not manifest (Ps 50 (51):6): Lk 11:44.
uncertain, indistinct: I Co 14:8.†
Moulton & Milligan — Vocabulary of the Greek NT
ἄδηλος. P Lond 940° (a.p. 226) (=III. p. 118) ἀδήλου ὄντος εἰ ὑμεῖν διαφέρει ἡ κληρονομία, P Oxy I. 1185 (late ili/A.D.) διὰ τὸ ἄδηλον τῆς ὁδοιπορίας.
Liddell-Scott-Jones — Greek-English Lexicon
ἄδηλος (adēlos) — unclear. ἄδηλ-ος, ον, unseen, invisible, of a fish, ποιεῖν ἑαυτὸν ἄ.[Refs 4th c.BC+]; ἄ. χιτών, of the hyaloid membrane of the eye, [[Refs 2nd c.AD+]; unknown, obscure, [Refs 8th c.BC+]; ἐὰν δὲ.. ἄ. ὁ κτείνας ᾖ [Refs]; of troops, ἄ. τοῖς πολεμίοις[Refs 5th c.BC+]
II. mostly of things, ἄ. θάνατοι death by an unknown hand, [Refs 5th c.BC+]; ἄ. ἔχθρα secret enmity, [Refs 5th c.BC+]; ῥεῖ πᾶν ἄδηλον melts all to nothing, [Refs 5th c.BC+]; inscrutable, [Refs 5th c.BC+]
II. b neuter, ἄδηλόν [ἐστι] εἰ.. it is uncertain whether.., [Refs 5th c.BC+]; ἄ. μή.. [Refs 5th c.BC+]; also ἄ. agreeing with the subject (like δίκαιός εἰμι), παῖδες ἄ. ὁποτέρων, ={ἄδηλον ὁποτέρων παῖδές εἰσιν}, [Refs 5th c.BC+]; ἀδήλοις.. πῶς ἀποβήσεται, ={ἃ ἄ. ἐστι πῶς ἀ}., [Refs 5th c.BC+]
II.2. not evident to sense, ὄψις τῶν ἀ. τὰ φαινόμενα[Refs 5th c.BC+]; opposed to φανερόν, [Refs 1st c.BC+]; opposed to ἐναργές,[Refs 2nd c.AD+]
II.3. unintelligible, φωνή[NT]
II.4. unproved, [Refs]
III. adverb -λως secretly, [Refs 5th c.BC+]: superlative -ότατα[Refs]