- 1extremely frightened synonym terrified a petrified expression petrified (of something) I'm petrified of snakes. They were petrified with fear (= so frightened that they were unable to move or think). petrified (that…) She was petrified that the police would burst in at any moment.
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- 2[only before noun] petrified trees, insects, etc. have died and been changed into stone over a very long period of time a petrified forest
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