Mountebank and Zany

Mountebank noun - One who makes false claims of identity or expertise.

Zany and mountebank are semantically related in clown topic. In some cases you can use "Zany" instead a noun "Mountebank".

Zany noun - A comically dressed performer (as at a circus) who entertains with playful tricks and ridiculous behavior.

Mountebank and zany are semantically related in clown topic. Sometimes you can use "Mountebank" instead a noun "Zany".