Stalker
Part of speech: noun
Definition: A person who engages in stalking. Originally meant a tracker and hunter or guide of game. A person who secretly follows someone, sometimes with unlawful intentions. Any of various devices for removing the stalk from plants during harvesting.
Sneak
Part of speech: noun
Definition: A mean, sneaking fellow., A ball bowled so as to roll along the ground; a daisy-cutter
Part of speech: verb
Definition: To creep or steal (away or about) privately; to come or go meanly, as a person afraid or ashamed to be seen; as, to sneak away from company.To hide, especially in a mean or cowardly manner.
Example sentence: If you're going to help somebody, sneak in, sneak out, do what you can. I just sneak along and do my thing and meet wonderful people, some people I've never met, new friends.