IPA: //ˈswiːtɪst//
KK: /switɪst/
The most pleasant or enjoyable taste, often associated with sugar or honey.
This cake is the sweetest dessert I've ever tasted.
Comparative: sweeter
Superlative: sweetest
Sweetest → It is formed from "sweet" (from Old English *swēte*, meaning pleasing to the taste or agreeable) and "-est" (a superlative suffix indicating the highest degree). The word "sweetest" means having the highest degree of sweetness or being the most pleasing to the taste.
Think of something that is the most 'pleasing' ('sweet') to the taste — that's what 'sweetest' means.
No commonly confused words.