The crossword solution for the term 'AMUSED IMMENSELY' is SLAYED, which is a six-letter word. The term 'slayed' is often used to describe something that has been greatly enjoyed or found to be extremely funny. It is derived from the verb 'to slay, ' which means to kill or to cause great destruction. Therefore, when someone is 'slayed' by something, it means that they have been greatly amused or entertained by it.