hover in WordNet English dictionary

1. hang over, as of something threatening, dark, or menacing
   "The terrible vision brooded over her all day long"
   brood  hover  loom  bulk large 
   
2. hang in the air; fly or be suspended above
   hover 
   
3. be suspended in the air, as if in defiance of gravity
   "The guru claimed that he could levitate"
   levitate  hover 
   
4. be undecided about something; waver between conflicting positions or courses of action
   "He oscillates between accepting the new position and retirement"
   hover  vibrate  vacillate  oscillate 
   
5. move to and fro
   "The shy student lingered in the corner"
   hover  linger