Extended Strong's Greek Lexicon (Abbott-Smith based)
to extinguish
Usage: σβέννυμι [in LXX chiefly for כָּבָה ;] of fire or things on fire, to quench: with accusative, Mat.12:20, Eph.6:16, Heb.11:34; pass., Mat.25:8, Mrk.9:48, [44, 46]. Metaphorical (cf. Sng.8:7, 4Ma.16:4): τὸ πνεῦμα, 1Th.5:19.† ζβέννυμι, for σβ-, 1Th.5:19 T (see WH, Notes, 148).† (AS)