The term 'Deck the Halls Syllables' refers to the eight syllables of the popular Christmas CAROL, 'Deck the Halls'. The syllables are 'FALALA' (6 letters), 'LAS' (3 letters), 'FAS' (3 letters), 'CAROL' (5 letters), 'TIS' (3 letters), 'ADORN' (5 letters), 'FALA' (4 letters), and 'LALA' (4 letters) and 'LALALA' (6 letters). Together, these syllables form the lyrics of the song, which is traditionally sung during the Christmas season.