Related Clues:

• Engaged a clapper?
• Facebook status word for some
• Summoned, with "for"
• __ a bell: was familiar
• Hired and intending to join union
• Promised to become enmeshed
• Busy when given a ring?
• Busy old English prior
• Busy old England? On the contrary
• Promised to be busy
• Called for a peeled orange
• Betrothed and already fighting
• Busy, as promised
• Busy but still agreed to get married
• Busy - fiancee