boo-hooray

Etymology
A reference to the interjections and  which provide no information beyond the emotional reaction of the speaker.

Adjective

 * 1) Having no meaning beyond the emotional reaction of the speaker; emotivist.

Usage notes
This term is used predominantly in speaking of the "boo-hooray theory of ethics", a nickname for emotivism, which states that our moral judgements are nothing more than an expression of our emotional responses.