IPA: /ˈkraɪ.ɪŋ.li/
KK: /ˈkraɪɪŋli/
In a manner that shows strong emotion, often involving tears or a loud expression of sadness.
She was cryingly expressing her feelings during the emotional scene in the movie.
Crying is formed from "cry" (from Old English "crīgan", meaning to weep or call out) and "-ingly" (a suffix used to form adverbs indicating manner). The word "cryingly" means in a manner that involves crying or weeping.
Think of the Old English word for weeping ('cry') and remember that 'cryingly' describes doing something in a way that involves crying.