Adjective terrifying has 1 sense
  1. terrific, terrifying - causing extreme terror; "a terrifying wail"
    Antonym: unalarming (indirect, via alarming)
,Verb terrify has 1 sense
  1. terrify, terrorize, terrorise - fill with terror; frighten greatly
    --1 is one way to frighten, fright, scare, affright
    Derived form: noun terror1
    Sample sentence:
    The bad news will terrify him
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