IPA: /ˈstʌnɪŋli/
KK: /ˈstʌnɪŋli/
In a way that is very impressive or beautiful.
The landscape was stunningly beautiful at sunset.
Stunningly → It is formed from "stun" (from Old English *stunian*, meaning to make senseless or dazed) and the suffix "-ingly" (meaning in a manner of). The word "stunningly" describes something done in a manner that causes astonishment or amazement.
Think of something that makes you feel dazed or amazed ('stun') and how it is done in a certain way ('-ingly'). This helps you remember that 'stunningly' means done in a way that astonishes.