Answer: lateriser

AnswerCrossword Clue
LATERISEROne slow to get up
LATERISERLazybones, perhaps
LATERISERMany a night owl
LATERISEROne who sleeps in
LATERISEROne who's not up at noon
LATERISERSlugabed
LATERISEREarly bird's opposite
LATERISERLie-abed
LATERISEROne unlikely to be alarmed?