Liddell-Scott-Jones

κτείνω (kteinō) to slay ^TEGMC

κτείνω,

Epic dialect subjunctive

__A κτείνωμι 8th c.BC: Odyssea Homerus Epicus “Odyssey” 19.490; Aeolic dialect κτέννω Hdn.Gr. 2.303 (and aorist 1 participle κτένναις 7th-6th c.BC: Alcaeus Lyricus 33.5), but κταίνω [prev. author] 140 accusative to [Refs 8th c.BC+]: future κτενῶ, Epic dialect [Refs 8th c.BC+], participle κτανέοντα only [Refs]: aorist 1 [Refs], etc.: aorist 2 [Refs], etc.: perfect not found un compounded: pluperfect [Refs 1st c.AD+]:—passive, future κτανθήσομαι [Refs]: Epic dialect 3rd.person etc for 1st.person, 2nd.person plural aorist [Refs 8th c.BC+] ἐκτάνθην “AP” 14.32, (ἀπ-) [LXX+NT] 65.4: aorist 2 ἀπ-εκτάνην [ᾰ] Gal.14.28: perfect ἐκτάνθαι ἀπ-) [Refs] and 3rd.person etc for 1st.person, 2nd.person plural aorist, compare [Refs]
__A.3 of things, ὥστε καὶ κτείνειν so as to be fatal, of the plague, [Refs] when the disease is proceeding towards a fatal termination, [Refs 1st c.AD+].
__A.4 put an end to, [Refs 2nd c.AD+]. (passive in [Refs 5th c.BC+], etc.; but Trag. almost always used θνῄσκω or καταθνῄσκω as the passive, Comedy texts Poets and Prose writers ἀποθνῄσκω.) (Cf. Sanskrit k[snull]atás 'wounded'.)

_{LSJ Scripture Refs: Mark.8.31}