Castles in air and Offbeat

Offbeat and castles in air are semantically related. in imaginary topic. In some cases you can use "Offbeat" instead an adjective phrase "Castles in air".

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

Castles in air and offbeat are semantically related. Sometimes you can replace phrase "Castles in air" with "Offbeat", this terms are similar.