slugabed

noun1

1. •
   A lazy person who lies in bed after the usual time for getting up; a sluggard.

   • Why Lambe, why Lady, fie you sluggabed, / Why Loue I say, Madam, sweeteheart, why Bride: / What not a word, you take your penniworths now, / Sleepe for a weeke, […] — 1591