Quick Definition
ἀδημονέω v. I am troubled, distressed
Strong's Definition
from a derivative of adeo (to be sated to loathing); to be in distress (of mind)
KJV Usage: be full of heaviness, be very heavy
UBS Dictionary of the Greek New Testament
UBS Dictionary of the Greek New Testament © United Bible Societies, licensed CC BY-SA 4.0.
Thayer's Greek Lexicon
ἀδημονέω, -d; (fr. the unused ἀδήμων, and this fr. a priv. and δῆμος ; accordingly uncomfortable, as not at home, cf. Germ. unheimisch, unheimlich; cf. Bitm. Lexil. ii. 136 [Fishlake’s trans. p. 29 sq. But Lob. (Pathol. Proleg. p. 238, cf. p. 160) et al. connect it with ἀδήμων, ἀδῆσαι; see Bp. Lghtft. on Phil. ii. 26]); to be troubled, distressed: Mt. xxvi. 37; Mk. xiv. 33; Phil. ii. 26. (Xen. Hell. 4, 4, 8 ἀδημονῆσαι τὰς ψυχάς, and often in prof. auth.)
Mounce Concise Greek Dictionary
ἀδημονέω adēmoneō 3x
to be depressed or dejected, full of anguish or sorrow, Mt. 26:37; Mk. 14:33; Phil. 2:26*
Abbott-Smith Greek Lexicon
** ἀδημονέω, -ῶ (on the derivation, v. MM, VGT, s.v.), [in Aq.: Jb 18:20; Sm.: Ps 60 (61):3 115:2 (116:11), Ec 7:17(16), Ez 3:15*;] to be troubled, distressed (MM, l.c.): Mt 26:37, Mk 14:33, Phl 2:26.†
Moulton & Milligan — Vocabulary of the Greek NT
ἀδημονέω. Lighttoot’s translation of ἀδημονῶν, ““ distressed,” in Phil 255, is borne out by P Oxy II. 29845 1. (i/a.p.) λίαν ἀδημονοῦμεν χάρ[ι]ν τῆς θρεπτῆς Σαραποῦτος, where the editors render, “I am excessively concerned on account of the foster-child Sarapous.” Towards the etymology of this word, T. W. Allen (CR xx. p. 5) traces an adj. δήμων in the //éad (M 211), with the meaning ‘‘ knowing” “ prudent,” so that ἀδημονεῖν would suggest originally bewilderment. The adj. must be independent of δαήμων, though ultimately from the same root (devs, as in δέδαε, Skt dasmdh: cf. Boisacq Dict. Ltym., Ρ. 168). " dons. Without suggesting that there is anything to be called a real parallel with Rev 218, it may be worth while to quote P Oxy I. 331 $® (late ii/A.D.), an interesting papyrus describing an interview between M. Aurelius or Commodus and a rebel, τίς ἤδη τὸν δεύτερόν μου ᾷδην προσκυνοῦντα καὶ τοὺς mpd ἐμοῦ τελευτήσαντας ... μετεκαλέσατο, zc. ‘facing death for the second time.” The word does not appear in the indices of any papyrus collection, so far as non-literary documents go: the magic papyrus, P Leid Vvii- 90 (οὗ ἡ γῆ ἀκούσασα ἐλεύσεται, ὁ ἄδης ἀκούων ταράσσεται) will serve as exception to prove the rule. Except for its appropriation from the literary language to represent Sheo/ in the LXX, we should probably not find it in NT. It is significant that Paul substitutes θάνατε for ἅδη when quoting Hos 13! in 1 Cor 15°. Prof. W. M. Calder tells us the word is common on tombstones in Asia Minor—doubtless a survival of its use in the old Greek religion.
Liddell-Scott-Jones — Greek-English Lexicon
ἀδημονέω (adēmoneō) — be distressed. ἀδημονέω, to be sorely troubled or dismayed, be in anguish, [Refs 5th c.BC+]; ὑπό τινος to be puzzled by.., [Refs 4th c.BC+], which is found only as variant in [Refs 5th c.BC+]