Definitions from Wiktionary (sick)

▸ adjective:  (less common in the UK and Ireland) In poor health; ill.
▸ adjective:  Having an urge to vomit.
▸ adjective:  (colloquial) Mentally unstable, disturbed.
▸ adjective:  (colloquial) In bad taste.
▸ adjective:  Tired of or annoyed by something [with of].
▸ adjective:  (slang) Very good, excellent, awesome, badass.
▸ adjective:  In poor condition.
▸ adjective:  (agriculture) Failing to sustain adequate harvests of crop, usually specified.
▸ noun:  (British, Australia, colloquial) Vomit.
▸ noun:  (British, colloquial) (especially in the phrases on the sick and on long-term sick) Any of various current or former benefits or allowances paid by the Government to support the sick, disabled or incapacitated.
▸ verb:  (British, Australia, colloquial) To vomit.
▸ verb:  (obsolete except in dialect, intransitive) To fall sick; to sicken.
▸ noun:  A surname from German.
▸ verb:  (rare) Alternative spelling of sic (“set upon”) [To mark with a bracketed sic.]
▸ Also see sick

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