IPA: /ˈteɪstɪst/
KK: /ˈteɪstɪst/
The most pleasing or delicious in flavor or taste.
This cake is the tastiest dessert I've ever had!
Tastiest → It is formed from "taste" (from Old French *taster*, meaning to sample or try) and the suffix "-iest" (meaning most). The word "tastiest" means having the most flavor or being the most enjoyable to taste.
Think of 'taste' as sampling flavors, and remember that 'tastiest' means the one with the most flavor.