Bizarre and Wacko

Bizarre adjective - Conceived or made without regard for reason or reality.

Wacko and bizarre are semantically related. (North American) in strange topic. In some cases you can use "Wacko" instead an adjective "Bizarre". informal substitute

Wacko adjective - Having or showing a very abnormal or sick state of mind.

Bizarre and wacko are semantically related. Sometimes you can use "Bizarre" instead an adjective "Wacko".