Too drying or tannic
A comfortable place to start
Tannin can feel drying or gripping around your mouth. Cabernet Sauvignon is a useful example to explore, although individual bottles vary.
You do not have to learn to enjoy a strong drying sensation. Describing it gives a wine professional a useful clue for suggesting another style.
Explore this topic
Try the wine with food if you are curious, and compare your reaction. Avoid treating every Cabernet as identical or assuming that a wine with less tannin is less interesting.