IPA: //ʌnˈæpɪtaɪzɪŋli//
KK: /ʌnˈæpɪtaɪzɪŋli/
In a way that does not look or taste good, making food seem unappealing.
The dish was served unappetizingly, with a strange color and texture.
Unappetizingly → It is formed from "un-" (meaning not), "appetizing" (from Latin "appetitus", meaning desire or craving, combined with the suffix "-ing" which indicates the action or process of), and "-ly" (meaning in a manner). The word describes something that is not appealing or desirable in terms of food.
Think of 'not' ('un-') making something 'desirable' ('appetizing') in a way that is 'mannered' ('-ly'). This helps you remember that 'unappetizingly' means in a way that is not appealing to eat.