Webster's Revised Unabridged Dictionary · 1913

Sicken

Sicken , transitive verb

1.
To make sick; to disease.
Raise this strength, and sicken that to death. — Prior
2.
To make qualmish; to nauseate; to disgust; as, to sicken the stomach.
3.
To impair; to weaken. [Obsolete] — Shakespeare

Sicken , intransitive verb

1.
To become sick; to fall into disease.
The judges that sat upon the jail, and those that attended, sickened upon it and died. — Bacon
2.
To be filled to disgust; to be disgusted or nauseated; to be filled with abhorrence or aversion; to be surfeited or satiated.
Mine eyes did sicken at the sight. — Shakespeare
3.
To become disgusting or tedious.
The toiling pleasure sickens into pain. — Goldsmith
4.
To become weak; to decay; to languish.
All pleasures sicken, and all glories sink. — Pope