Composed repeats in D flat? (10)
I believe the answer is:
pedestrian
'flat?' is the definition.
(thesaurus)
'composed repeats in d' is the wordplay.
'composed' is an anagram indicator.
'repeats'+'in'+'d'='repeatsind'
'repeatsind' anagrammed gives 'PEDESTRIAN'.
(Other definitions for pedestrian that I've seen before include "Dull, uninspired" , "How commonplace" , "Unexciting" , "footman" , "Person walking" .)