Reluctantly, perhaps, Victor tucks into processed bread (6)
I believe the answer is:
adverb
'reluctantly perhaps' is the definition.
I can't judge whether this defines the answer.
'victor tucks into processed bread' is the wordplay.
'victor' becomes 'V' (phonetic alphabet: alpha, bravo, charlie etc.).
'tucks into' is an insertion indicator.
'processed' indicates an anagram.
'bread' with letters rearranged gives 'aderb'.
'v' placed within 'aderb' is 'ADVERB'.
Can you help me to learn more?
(Other definitions for adverb that I've seen before include "Verb qualifier" , "Action word qualifier" , "Word to qualify an action" , "Qualifying word (gram.)" , "outside perhaps" .)