"pursue stealthily," O.E.
-stealcian, as in
bestealcian "to steal along," from P.Gmc.
*stalkojanan, probably from a frequentative of the root of
steal (cf.
hark from
hear,
talk from
tell). Or it may be from a sense of
stalk (v.1), influenced by
stalk (n.). Meaning "harass obsessively" first recorded 1991.
Stalker earlier meant "a poacher" (1424) and "one who prowls for purposes of theft" (1508). A
stalking-horse was lit. a horse trained to allow a fowler to conceal himself behind it to get within range of the game; fig. sense of "person who participates in a proceeding to disguise its real purpose" is recorded from 1612.