Definitions from Wiktionary (freak out)

▸ noun:  (dated slang) A negative or unpleasant experience with LSD or another psychedelic drug.
▸ verb:  (informal, intransitive) To react with extreme anger or fear, to the extent that one loses one's composure or behaves irrationally.
▸ verb:  (informal, transitive) To scare or unnerve someone.
▸ verb:  (informal, intransitive) To be upset or nervous; to be scared or unnerved.
▸ verb:  (informal, intransitive) To adopt an unconventional (especially countercultural) persona or appearance.
▸ Also see freak_out

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