Bible Greek and Hebrew Dictionaries combined for Word Studies
Genesis Chapter 1
mortify 2289 # thanatoo {than-at-o'-o}; from 2288 to kill (literally or figuratively): -- become dead, (cause to be) put to death, kill, {mortify}. ***. thano. See 2348.
mortify 3499 # nekroo {nek-ro'-o}; from 3498; to deaden, i.e. (figuratively) to subdue: -- be dead, {mortify}.