sweetheart

sweetheart is a valid word in Scrabble and Words With Friends. It has 10 letters and scores 16 points before any board bonuses (s 1 + w 4 + e 1 + e 1 + t 1 + h 4 + e 1 + a 1 + r 1 + t 1).

“SWEETHEART” on Wiktionary