Regret investing peso: not so -- for another currency? (5)
I believe the answer is:
rupee
'another currency?' is the definition.
'rupee' can be an answer for 'currency?' (I've seen this before). I'm not certain of the 'another' bit.
'regret investing peso not so' is the wordplay.
'regret' becomes 'rue' ('rue' can be a synonym of 'regret').
'investing' is an insertion indicator.
'not' suggests deleting specific letters.
'rue' placed around 'peso' is 'rupesoe'.
'rupesoe' with 'so' taken out is 'RUPEE'.
'for' acts as a link.
Can you help me to learn more?
(Other definitions for rupee that I've seen before include "low cost in Pakistan?" , "Unit of money in India" , "Indian bread" , "little money abroad" , "100 paise" .)