Build castles in air and Thought-out

Thought-out and build castles in air are semantically related. In some cases you can replace phrase "Thought-out" with "Build castles in air", this phrases are similar.

Thought-out adjective - Decided on as a result of careful thought.

Build castles in air and thought-out are semantically related. Sometimes you can use "Build castles in air" instead a verb phrase "Thought-out".