Bob's turn to be awkward and refractory (8)
I believe the answer is:
stubborn
'refractory' is the definition.
('stubborn' can be a synonym of 'refractory')
'bob's turn to be awkward' is the wordplay.
'to be awkward' indicates anagramming the letters.
'bobs'+'turn'='bobsturn'
'bobsturn' is an anagram of 'STUBBORN'.
'and' is the link.
(Other definitions for stubborn that I've seen before include "Resistant to change" , "Tenaciously unwilling to give in" , "refractory" , "Showing dogged determination" , "Difficult to move" .)