IPA: /ˈtuːθsəmli/
KK: /ˈtuːθsəmli/
In a way that is very pleasant to taste; deliciously.
The cake was toothsomely decorated and tasted amazing.
Toothsomely → It is formed from "toothsome" (from Old English *toþsum*, meaning pleasing to the taste) and the suffix "-ly" (meaning in a manner of). The word "toothsomely" means in a manner that is pleasing to the taste.
Think of something that is 'pleasing to the taste' ('toothsome') and remember that 'toothsomely' describes how something is enjoyed in that way.