lurk
lurk \'l*rk\ vi [ME lurken; akin to MHG lu-ren to lie in wait - more at LOW]ER 1a: to lie in ambush : SKULK 1b: to move furtively or inconspicuously : SNEAK 1c: to persist in staying 2a: to be concealed but capable of being discovered; specif : to c onstitute a latent threat 2b: to lie hidden as to escape attention. LURK implies a lying in wait in a place of concealment and suggests a readiness to attack; SKULK suggests more strongly cowardice or fear or sinister intent; SLINK implies moving stealthily often merely to escape attention; SNEAK may add an implication of entering or leaving a place or evading a difficulty by furtive, indirect, or underhanded methods - lurk.er n SYN syn LURK, SKULK, SLINK, SNEAK mean to behave so
Webster's English Dictionary