from 4442; to kindle, i.e. (passively) to be ignited, glow (literally), be refined (by implication), or (figuratively) to be inflamed (with anger, grief, lust):

KJV-- burn, fiery, be on fire, try.

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4442 pur (poor);

a primary word; "fire" (literally or figuratively, specifically, lightning):

KJV-- fiery, fire.