IPA: /mɔːrˈtɪfaɪɪŋli/
KK: /mɔrˈtɪfaɪŋli/
In a way that causes great embarrassment or shame.
She mortifyingly realized she had forgotten her lines during the performance.
Mortifyingly → It is formed from "mortify" (from Latin "mortificare", meaning to put to death or to subdue) and the adverbial suffix "-ly" (meaning in a manner of). The word "mortifyingly" means in a manner that causes great embarrassment or shame, as if one were figuratively put to death by humiliation.
Think of the word 'mortify' which means to 'put to death' in a figurative sense, and remember that 'mortifyingly' describes something done in a way that causes deep embarrassment, as if one were dying of shame.