Off-the-wall and Overmuch

Off-the-wall adjective - Different from the ordinary in a way that causes curiosity or suspicion.

Overmuch and off-the-wall are semantically related. In some cases you can use "Overmuch" instead an adjective phrase "Off-the-wall".

Overmuch adjective - Going beyond a normal or acceptable limit in degree or amount.

Off-the-wall and overmuch are semantically related. Sometimes you can use "Off-the-wall" instead an adjective "Overmuch".