IPA: /ˈpærəˌlaɪzɪŋli/
KK: /pærəˈlaɪzɪŋli/
In a way that causes someone or something to be unable to move or act.
The fear was paralyzingly strong, making it hard for her to speak.
Paralyzingly → It is formed from "paralyze" (from Greek "paralyein", meaning to disable or make inactive) and the suffix "-ingly" (meaning in a manner that). The word "paralyzingly" describes an action done in a way that causes paralysis or disables movement.
Think of something that makes you feel completely inactive or disabled ('paralyze') and remember that doing it 'in a manner' ('-ingly') means it has a paralyzing effect.