Rogue stern dad grounded? (8)
I believe the answer is:
stranded
'grounded?' is the definition.
(thesaurus)
'rogue stern dad' is the wordplay.
'rogue' is an anagram indicator (letters go rogue).
'stern'+'dad'='sterndad'
'sterndad' with letters rearranged gives 'STRANDED'.
(Other definitions for stranded that I've seen before include "Left without resources - on beach?" , "Abandoned or deserted - on beach" , "Left high and dry, deserted" , "Beached" , "Like rope" .)