The quality or state of being sick or diseased; illness. / Nausea; qualmishness; as, sickness of stomach.

plural of sickness

simple past tense and past participle of sick

Obsolete spelling of sick

present participle of sick

Third-person singular simple present indicative form of sick

(colloquial) To vomit. / (obsolete except in dialect, intransitive) To fall sick; to sicken.

(rare) Alternative spelling of sic

(Britain, Australia, colloquial) Vomit.

(less common in the UK) In poor health; ill. / Having an urge to vomit. / (colloquial) Mentally unstable, disturbed. / (colloquial) In bad taste. / Tired of or annoyed by something.