Perhaps the samurai was clumsy? (10)
I believe the answer is:
amateurish
'clumsy?' is the definition.
(thesaurus)
'perhaps the samurai' is the wordplay.
'perhaps' is an anagram indicator.
'the'+'samurai'='thesamurai'
'thesamurai' anagrammed gives 'AMATEURISH'.
'was' acts as a link.
(Other definitions for amateurish that I've seen before include "rather inept" , "Rather 31 across" , "incompetent" , "Not very professional" , "Unprofessional" .)