- 1[transitive] petrify somebody to make someone feel extremely frightened synonym terrify Just the thought of making a speech petrifies me. His icy stare petrified her.
- 2[intransitive, transitive] petrify (something) to change or to make something change into a substance like stone
NAmE//ˈpɛtrəˌfaɪ//Verb Forms present simple I / you / we / they petrify
he / she / it petrifies
past simple petrified
-ing form petrifying