Answer: lackluster

AnswerCrossword Clue
LACKLUSTERDull
LACKLUSTERSluggish
LACKLUSTERHo-hum
LACKLUSTERFlat
LACKLUSTERFLAT
lackluster(of the hair or the eyes) Not shining; dull
lacklusterLacking in vitality, force, or conviction; uninspired or uninspiring
lacklusterlacking lustre, uninspiring / something lacking lustre also LACKLUSTRE