Etymology
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yikes 

exclamation of alarm or surprise, by 1953; perhaps from yoicks, a call in fox-hunting, attested from c. 1770. Yike "a fight" is slang attested from 1940, of uncertain connection.

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hike (v.)

1809, hyke "to walk vigorously," an English dialectal word of unknown origin. A yike from 1736 answers to the sense. Not in widespread popular use until early 20c.

HIKE, v. to go away. It is generally used in a contemptuous sense. Ex. "Come, hike," i.e. take yourself off; begone. [Rev. Robert Forby, "The Vocabulary of East Anglia," London, 1830]

Sense of "pull up" (as pants) first recorded 1873 in American English, and may be a variant of hitch; extended sense of "raise" (as wages) is 1867. Related: Hiked; hiking.

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