1. ENERVATION   departure from main subject   difference   boredom   weakening   Hint Half-n-half Clue   2. DUPE   person easily tricked   sharing of feelings   difference   disappearance   Half-n-half Clue   3. DUPLICITY   puzzle   guile   hindrance   excessive enthusiasm   Half-n-half Clue   4. DISSONANCE   disappearance   guile   discord   great difference   Half-n-half Clue   5. EMPATHY   sharing of feelings   puzzle   intense feeling   time during which thing lasts   Half-n-half Clue   6. EXASPERATION   weakening   sorrowful song   frustration   expression of praise   Half-n-half Clue   7. ENIGMA   puzzle   departure from main subject   excessive enthusiasm   boredom   Half-n-half Clue