The term 'Happy as a Clam' is an idiom that is used to describe someone who is feeling content and satisfied. The crossword solutions for this term are ELATED (6 letters), PLEASED (7 letters), and BLISSFUL (8 letters). ELATED means to be in a state of extreme joy or pride, PLEASED means to be satisfied or content, and BLISSFUL means to be in a state of perfect happiness. All three words can be used to describe someone who is feeling 'Happy as a Clam'.