1. In a rampant manner.

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

• eampantly,
• dampantly,
• fampantly,
• tampantly,
• 5ampantly,
• 4ampantly,
• rzmpantly,
• rsmpantly,
• rwmpantly,
• rqmpantly,
• ranpantly,
• rakpantly,
• rajpantly,
• ramoantly,
• rampently,
• rampandly,
• gaspeingly,
• Rompeishly,
• rampandtly,
• rampentily

• rampion,
• rampant,
• rampant arch.

The adjective form of "rampantly" is "rampant".