lurk

Verb

• wait in hiding to attack

• be about
  • The high school students like to loiter in the Central Square
    
  • Who is this man that is hanging around the department?
    

• lie in wait, lie in ambush, behave in a sneaky and secretive manner

Related words

• Synonyms: 
  ambush , scupper , bushwhack , waylay , ambuscade , lie in wait , skulk