Related Clues:

• Obsess (on)
• Belabor, with 'on'
• Clio, Erato or Urania
• Think anxiously about something
• Clio, Erato or Urania, e.g.
• Stay on the same topic too long
• Ruminate
• Melpomene, e.g.
• Meditate over
• Writer's inspiration
• There's one for dance
• Be introspective
• Make one's home
• Urania, e.g.
• Artist's inspirer