Petty case involving Victor and me (7)
I believe the answer is:
trivial
'petty' is the definition.
(I know that petty can be written as trivial)
'case involving victor and me' is the wordplay.
'case' becomes 'trial' (court case).
'involving' indicates putting letters inside.
'victor' becomes 'V' (phonetic alphabet: alpha, bravo, charlie etc.).
'and' means one lot of letters go next to another.
'me' becomes 'I'.
'v' put after 'i' is 'iv'.
'trial' going around 'iv' is 'TRIVIAL'.
(Other definitions for trivial that I've seen before include "Slight" , "Trifling" , "Meaningless" , "lacking weight" , "Of little importance" .)