inextinguishable
adjective
[ ɪnɪkˈstɪŋɡwɪʃəb(ə)l ]
• unable to be extinguished or quenched.
• "a small inextinguishable candle"
Similar:
irrepressible,
unquenchable,
imperishable,
indestructible,
undying,
unfading,
unfailing,
unceasing,
ceaseless,
enduring,
lasting,
everlasting,
eternal,
persistent,
incessant,