1. The rank of a captain.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• captancy,
• captaing,
• capaincy,
• cptaincy,
• xaptaincy,
• vaptaincy,
• faptaincy,
• daptaincy,
• czptaincy,
• csptaincy,
• cwptaincy,
• cqptaincy,
• caotaincy,
• caltaincy,
• ca-taincy,
• ca0taincy,
• capraincy,
• capfaincy,
• captincy,
• captainsy

• captain bob,
• caftan,
• captain cook,
• capitano,
• captain,
• Captain Kidd,
• captains,
• caption,
• captainship.

The adjective form of the word "captaincy" is "captainic". However, it is worth noting that this term is not commonly used, and there may be alternative ways to convey the same meaning in context.

The plural of the "captaincy" can be the "captaincies".

The singular of the "captaincy" can be the "captaincy".