1. That may be executed.

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

• executibe,
• executible,
• executeable,
• executibles,
• execusable,
• exeptable,
• excecutable,
• exectuable,
• exicutible,
• excetable,
• executiable,
• excutable,
• executablity,
• exsecutable,
• execuatble,
• Exucutable,
• Exacutable,
• inexcecutable,
• Inexecutible,
• exactablle

• executant,
• execution,
• exactness,
• execute,
• executive,
• executor,
• executrix,
• executed,
• executing,
• executability,
• executioner.

The adjective form of the word "Executable" is "Executability".

The plural form of the word "executable" is "executables".

The singular form of the word "Executable" is "executive"