1. In a successful manner.

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

• sucessfuly,
• secessfully,
• uccessfully,
• successfullu,
• succussfull,
• succuessfully,
• successfullly,
• sucssessfully,
• succesfully,
• sucessdully,
• successfull,
• sucessfullly,
• suscesfully,
• cuccesfully,
• succesfullly,
• sucsessfully,
• seccussfully,
• succusfully,
• usccessfully,
• succesfuly

• successfulness,
• successive,
• successively,
• successiveness,
• successful.

The adjective form of the word "successfully" is "successful".

The plural form of the word "successfully" is "successfully".

The singular form of the word "successfully" is "success"