1. In a rotten manner.

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

• routenly,
• rutenly,
• rottened,
• routeinly,
• routinly,
• rutienly,
• rottens,
• routienly,
• routeenly,
• dottilly,
• rotenly,
• rottunly,
• neotteny,
• protenly,
• Sotterly,
• rotoendly,
• rotwendly,
• Rottela,
• pottensy,
• Dotterdly

• routinely.

The adjective form of the word "rottenly" is "rotten".