Gifts Portugal considers as an affront (8)
I believe the answer is:
presents
'gifts' is the definition.
('present' can be a synonym of 'gift')
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for presents that I've seen before include "donations" , "Hands over the gifts" , "Awards formally" , "special things at Christmas?" , "tips" .)