Sitting on the fence and Wishy-washy

Wishy-washy and sitting on the fence are semantically related. In some cases you can use "Wishy-washy" instead an adjective phrase "Sitting on the fence".

Wishy-washy adjective - Lacking in qualities that make for spirit and character.

Sitting on the fence and wishy-washy are semantically related. Sometimes you can use "Sitting on the fence" instead an adjective phrase "Wishy-washy".