Speak Wildly is a phrase that can be used to describe someone who is speaking in an uncontrolled and passionate manner. The two crossword solutions for this term are RAVE and RANT, both of which have four letters. A RAVE is a term used to describe a wild and enthusiastic expression of emotion, while a RANT is a long and angry speech. Both terms can be used to describe someone who is speaking wildly and passionately.