Accepted hot rod crashed round ten (8)
I believe the answer is:
orthodox
'accepted' is the definition.
(thesaurus)
'hot rod crashed round ten' is the wordplay.
'crashed' indicates an anagram.
'round' becomes 'o' (round can mean a round object**).
'ten' becomes 'x' ('X' can be a synonym of 'ten').
'hot'+'rod'='hotrod'
'hotrod' anagrammed gives 'orthod'.
'orthod'+'o'+'x'='ORTHODOX'
(Other definitions for orthodox that I've seen before include "Standard" , "Sound in doctrine" , "Conforming with established doctrine" , "Conservative" , "Accepted, conventional" .)