aftertaste
af·ter·taste
/ˈæftɚˌteıst, Brit ˈɑːftəˌteıst/ noun [ singular ]
: a taste that remains after something is eaten or drunk
The wine has a smooth/fruity/sweet aftertaste.
— often used figuratively
The experience left me with a bitter aftertaste. [=I felt bitter after the experience]
