IPA: /ˈmaʊθˌwɔtərɪŋli/
KK: /maʊθˈwɔtərɪŋli/
In a way that makes you feel very hungry or eager to eat something delicious.
The chef presented the dish mouthwateringly, making everyone at the table excited to try it.
Mouthwateringly → It is formed from "mouth" (from Old English *muð*, meaning the opening of the face used for eating and speaking), "water" (from Old English *wæter*, meaning liquid), and the suffix "-ingly" (indicating manner or quality). The word describes something that causes saliva to flow in anticipation of eating, thus making it mouthwatering.
Think of the 'mouth' as the part of the body that anticipates food, and 'water' as the saliva that flows when something looks delicious. So, 'mouthwateringly' means in a way that makes your mouth water in anticipation of tasty food.