Stay in bed -- is Eric getting up? (6)
I believe the answer is:
reside
'stay' is the definition.
(thesaurus)
'in bed is eric getting up?' is the wordplay.
'in' indicates the answer is hidden within the clue.
'getting up?' says the letters should be written backwards.
'ediser' is hidden in the letters of 'bed is eric'.
'ediser' reversed gives 'RESIDE'.
(Other definitions for reside that I've seen before include "Lodge" , "Live in permanently" , "Dwell, be present (in)" , "Live (at an address)" , "Dwell in desire" .)