To be extinguished, to go out (of a fire or flame). A rare word describing the dying of fire or light. In a world before electric lighting, extinguished fire meant darkness, cold, and vulnerability.
The extinguishing of fire in Scripture symbolizes divine judgment and the removal of God's presence. 'The lamp of the wicked is put out' (Prov 13:9). In contrast, God's fire — His presence in the burning bush, the pillar of fire, the altar flame — is never za'ak. The eternal flame represents God's unquenchable nature. Isaiah's Suffering Servant 'will not be quenched' (Isa 42:3) — the Messiah's mission cannot be extinguished.