Know-it-all and Rocket scientist

Know-it-all noun - Someone who thinks he knows everything and refuses to accept advice or information from others.

Rocket scientist and know-it-all are semantically related. In some cases you can use "Rocket scientist" instead a noun phrase "Know-it-all".

Rocket scientist noun - A clever thinker.

Know-it-all and rocket scientist are semantically related. Sometimes you can use "Know-it-all" instead a noun phrase "Rocket scientist".