- 1 (formal) nervous and afraid fearful (for somebody) Parents are always fearful for their children. fearful (of something/of doing something) fearful of an attack Fearful of continued unrest, the government imposed a state of emergency. fearful (that…) She was fearful that she would fail.
- 2[only before noun] (formal) terrible and frightening
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NAmE//ˈfɪrfəli//adverb We watched fearfully.
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