protagonist /prə- or prō-tagˈə-nist/

1. Orig the chief actor, character or combatant
2. Now often applied to any (or in pl, all) of the main personages or participants in a story or event
3. (loosely) a champion or advocate

• double-locked
• double-log
• double-logarithmic
• double majority
• double-manned
• double-meaning
• double-minded
• double-mindedness
• double-mouthed
• double-natured
• double negation
• double negative
• double negatives
• doubleness
• doublenesses
• double obelisk
• double obelisks
• double obelus
• double or quits
• double-or-quits
• double-page spread
• double-page spreads
• double-park
• double-parked
• double-parking