I don't care where TV actor originally worked (8)
I believe the answer is:
whatever
'i don't care' is the definition.
('whatever' can be used to express lack of interest)
'where tv actor originally worked' is the wordplay.
'originally' says to take the initial letters.
'worked' is an anagram indicator.
The initial letter of 'actor' is 'a'.
'where'+'tv'+'a'='wheretva'
'wheretva' with letters rearranged gives 'WHATEVER'.
(Other definitions for whatever that I've seen before include "Anything; at all" , "The waver? (anag)" , "Off the wall" , "Of any kind at all" .)