LURK
ambush, scupper, bushwhack, waylay, lurk, ambuscade, lie in wait
(verb) wait in hiding to attack
loiter, lounge, footle, lollygag, loaf, lallygag, hang around, mess about, tarry, linger, lurk, mill about, mill around
(verb) be about; “The high school students like to loiter in the Central Square”; “Who is this man that is hanging around the department?”
lurk, skulk
(verb) lie in wait, lie in ambush, behave in a sneaky and secretive manner
Source: WordNet® 3.1
Etymology
Verb
lurk (third-person singular simple present lurks, present participle lurking, simple past and past participle lurked)
To remain concealed in order to ambush.
To remain unobserved.
To hang out or wait around a location, preferably without drawing attention to oneself.
(Internet) To view an internet forum without posting comments.
(UK, naval slang, transitive) To saddle (a person) with an undesirable task or duty.
Noun
lurk (plural lurks)
The act of lurking.
(obsolete) A swindle.
Source: Wiktionary
Lurk, v. i. [imp. & p. p. Lurked; p. pr. & vb. n. Lurking.] Etym:
[OE. lurken, lorken, prob. a dim. from the source of E. lower to
frown. See Lower, and cf. Lurch, a sudden roll, Lurch to lurk.]
1. To lie hid; to lie in wait.
Like wild beasts, lurking in loathsome den. Spenser.
Let us . . . lurk privily for the innocent. Prov. i. 11.
2. To keep out of sight.
The defendant lurks and wanders about in Berks. Blackstone.
Source: Webster’s Unabridged Dictionary 1913 Edition