1. One who confers any benefit 
2. One who collates to a benefice 
3. One who collates manuscripts, books, etc

Derived forms: collators

• openhanded
• openhandedness
• openhearted
• opening
• opening line
• opening move
• opening night
• openly
• openmouthed
• openness
• openside plane
• openwork
• opepe
• opera
• opera buffa
• opera cloak
• opera comique
• opera company
• opera glasses
• opera hat
• opera hood
• opera house
• opera star
• operable
• operagoer