zelos (Greek #2205)
properly, heat, i.e. (figuratively) "zeal" (in a favorable sense, ardor; in an unfavorable one, jealousy, as of a husband (figuratively, of God), or an enemy, malice)
KJV usage: emulation, envy(-ing), fervent mind, indignation, jealousy, zeal.
Pronounce: dzay'-los