sick

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sick

1. inclined or likely to vomit
2. 
a. suffering from ill health
b. (as collective noun; preceded by the): the sick
3. 
a. of, relating to, or used by people who are unwell
b. (in combination): sickbed
4. deeply affected with a mental or spiritual feeling akin to physical sickness
5. mentally, psychologically, or spiritually disturbed
6. an informal word for vomit
References in classic literature ?
Picture the squalid misery of their brutish existence, dragged on from year to year in the narrow, noisome room where, huddled like vermin in sewers, they welter, and sicken, and sleep; where dirt-grimed children scream and fight and sluttish, shrill-voiced women cuff, and curse, and nag; where the street outside teems with roaring filth and the house around is a bedlam of riot and stench.
It beats and throbs like a pulsating heart within her iron ribs, and when it stops, the steamer, whose life is not so much a contest as the disdainful ignoring of the sea, sickens and dies upon the waves.
Nevertheless, many molds can irritate or sicken sensitive individuals such as infants, the elderly or asthmatics.