IPA: /ɪnˈtɪmɪdeɪtɪŋli/
KK: /ɪnˈtɪmɪdeɪtɪŋli/
In a way that causes fear or apprehension; making someone feel afraid or nervous.
The teacher spoke intimidatingly, making the students feel anxious about the exam.
Intimidatingly → It is formed from "intimidate" (from Latin "intimidare", meaning to frighten) and the suffix "-ingly" (meaning in a manner). The word "intimidatingly" describes the manner in which something causes fear or apprehension.
Think of something that frightens you ('intimidate') and how it can be done 'in a manner' ('-ingly') that makes it even more daunting.