Tina comes up with a new name (5)
I believe the answer is:
anita
'new name' is the definition.
'Anita' can be an answer for 'name'. I am not certain of the 'new' bit.
'tina comes up with a' is the wordplay.
'comes up' shows that the letters should be reversed in order.
'with' means one lot of letters go next to another.
'tina' written backwards gives 'anit'.
'anit'+'a'='ANITA'
Can you help me to learn more?
(Other definitions for anita that I've seen before include "lady" , "-- Brookner, English novelist" , "eg Dobson or Roddick" , "Woman" , "- Loos (Gentlemen Prefer Blondes)" .)