Complimentary lad at your service (9)
I believe the answer is:
adulatory
'complimentary' is the definition.
(synonyms)
'lad at your service' is the wordplay.
'service' is an anagram indicator (I've seen 'serviced' mean this (to service can mean to repair)).
'lad'+'at'+'your'='ladatyour'
'ladatyour' is an anagram of 'ADULATORY'.
(Other definitions for adulatory that I've seen before include "like a spaniel?" , "full of puff?" , "Flattering" , "Sycophantic" .)