Disturbed, disconcerted, or confused (usually used in the phrase 'not fazed').
Past tense and past participle of 'faze,' from 1830s American dialect. Possibly derived from 'feaze' or 'faze' meaning to twist or drive away, with roots in Old English and Germanic languages.
People say 'not fazed' so often that many think it's spelled 'phased,' but it has nothing to do with phases—it means untroubled and unimpressed!
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