Double-edged and Off-the-wall

Double-edged adjective - Consisting of two members or parts that are usually joined.

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

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

Double-edged and off-the-wall are semantically related. Sometimes you can use "Double-edged" instead an adjective phrase "Off-the-wall".