Verb

• S: (v) haunt, obsess, ghost (haunt like a ghost; pursue) "Fear of illness haunts her"
• direct hypernym / inherited hypernym / sister term
• S: (v) preoccupy (engage or engross the interest or attention of beforehand or occupy urgently or obsessively) "His work preoccupies him"; "The matter preoccupies her completely--she cannot think of anything else"
• derivationally related form
• sentence frame
• S: (v) obsess (be preoccupied with something) "She is obsessing over her weight"