Perhaps akin to etos; "yet," still (of time or degree) -- after that, also, ever, (any) further, (t-)henceforth (more), hereafter, (any) longer, (any) more(-one), now, still, yet.

see GREEK etos

1. of time;

a. of a thing which went on formerly, whereas now a different state of things exists or has begun to exist: added to a participle, Matthew 27:63; Luke 24:6, 44; Acts 9:1; Acts 18:18; 2 Thessalonians 2:5; with the gen absolute: ἔτι (δέ) αὐτοῦ λαλοῦντος, Matthew 12:46; Matthew 17:5; Matthew 26:47; Mark 14:43; Luke 8:49; Luke 22:47; add, Luke 9:42; Luke 24:41; John 20:1; Acts 10:44; Romans 5:8; Hebrews 9:8; with a finite verb, Hebrews 7:10; transposed so as to stand at the beginning of a sentence: ἔτι γάρ Χριστός ὄντων ἡμῶν ἀσθενῶν ... ἀπέθανε, Romans 5:6; cf. Winers Grammar, § 61, 5, p. 553 (515); (Buttmann, 389 (333)); with another notation of time, so that it may be translated even (cf. Latinjam): ἔτι ἐκ κοιλίας μητρός, Luke 1:15 (ἔτι ἐκ βρεφεος, Anthol. 9, 567, 1; ἔτι ἀπ' ἀρχῆς, Plutarch, consol. ad Apoll. 6, p. 104 d.).

b. of a thing which continues at present, even now: Mark 8:17 R G; Luke 14:22; Galatians 1:10; 1 Corinthians 15:17; with νῦν added, 1 Corinthians 3:2 (L WH brackets ἔτι); farther, longer (where it is thought strange that, when one thing has established itself, another has not been altered or abolished, but is still adhered to or continues): Romans 3:7; Romans 6:2; Romans 9:19; Galatians 5:11.

c. with negatives: οὐ ... ἔτι, οὐκ ἔτι, no longer, no more, Luke 16:2; Luke 20:36; Luke 21:1, 4; Luke 22:3; ἵνα μή ἔτι lest longer, that ... no more, Revelation 20:3; οὐ μή ἔτι, Revelation 3:12; Revelation 18:21-23; οὐδείς, μηδείς, οὐδεμία, οὐδέν ἔτι, nobody, nothing more, Matthew 5:13; Hebrews 10:2 (see μηκέτι, οὐκέτι).

2. of degree and increase; with the comparative, even, yet: Philippians 1:9; Hebrews 7:15 (Winers Grammar, 240 (225)). of what remains (yet): John 4:35; John 7:33; John 12:35; John 13:33; Matthew 19:20; Mark 12:6; Luke 18:22; of what is added, besides, more, further: ἔτι ἅπαξ, Hebrews 12:26f; ἔτι ἕνα ἤ δύο, Matthew 18:16; add, Matthew 26:65; Hebrews 11:32; ἔτι δέ yea moreover, and further (Latinpraetereavero), Hebrews 11:36 (Xenophon, mem. 1, 2, 1; Diodorus 1, 74; cf. Grimm on 2 Macc. 6:4); ἔτι δέ καί (but or) yea moreover also (Latinpraetereaveroetiam), Luke 14:26 R G T L marginal reading; Acts 2:26; ἔτι τέ καί and moreover too (Latininsuperqueadeo), Luke 14:26 L text Tr WH; Acts 21:28 (cf. Buttmann, § 149, 8; Winers Grammar, 578 (537) note).