1. By means of the functions.

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

• functionallity,
• functioanly,
• functionalit,
• funtionally,
• functionaly,
• functionalty,
• functionaltiy,
• functionaily,
• functionalilty,
• funcationalty,
• functionailty,
• functionable,
• functionaity,
• functionallty,
• functionaliy,
• functionalety,
• funcionally,
• functionall,
• funcitionally,
• funcationatly

• functional,
• function word,
• functionality,
• functionalist,
• functionary,
• function call,
• functioning,
• functionalism.

The adjective form of the word "functionally" is "functional".