• bullfog,
• vullfrog,
• nullfrog,
• hullfrog,
• gullfrog,
• byllfrog,
• bhllfrog,
• bjllfrog,
• billfrog,
• b8llfrog,
• bullfrig,
• bulfrog,
• bullforg,
• bullyboi,
• buhlwrok,
• Bullirig,
• bulltroute,
• bullyrcok,
• julifrom,
• ellfrod

• bulbar,
• Bulfer,
• bulldog.

The adjective form of the word "bullfrog" is "bullfroggy".

The plural of the "bullfrog" can be the "bullfrogs".

The singular of the "bullfrog" can be the "bullfrog".