Is it ensure, insure, or assure?
Old English huntian "chase game," related to hentan "to seize," from Proto-Germanic *huntojan (cf. Gothic hinþan "to seize, capture," Old High German hunda "booty"), from PIE *kend-.
General sense of "search diligently" (for anything) is first recorded c.1200. Related: Hunted; hunting. Happy hunting-grounds "Native American afterlife paradise" is from "Last of the Mohicans" (1826).
early 12c., from hunt (v.). Meaning "body of persons associated for the purpose of hunting with a pack of hounds" is first recorded 1570s.
mentioned first in Gen. 10:9 in connection with Nimrod. Esau was "a cunning hunter" (Gen. 25:27). Hunting was practised by the Hebrews after their settlement in the "Land of Promise" (Lev. 17:15; Prov. 12:27). The lion and other ravenous beasts were found in Palestine (1 Sam. 17:34; 2 Sam. 23:20; 1 Kings 13:24; Ezek. 19:3-8), and it must have been necessary to hunt and destroy them. Various snares and gins were used in hunting (Ps. 91:3; Amos 3:5; 2 Sam. 23:20). War is referred to under the idea of hunting (Jer. 16:16; Ezek. 32:30).