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gook1

[goo k, gook]
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noun Informal.
  1. guck.
  2. makeup, especially when thickly applied: She looks ridiculous with all that gook around her eyes.

Origin of gook1

expressive word, perhaps blend of goo and muck; cf. guck

gook2

[gook]
noun Slang: Extremely Disparaging and Offensive.
  1. a contemptuous term used to refer to a native of Southeast Asia or the South Pacific, especially a member of an enemy military force.
  2. a contemptuous term used to refer to any dark-skinned foreigner, especially a non-European or non-American.
  3. anyone who is offensive to others because of stupidity, coarseness, etc.

Origin of gook2

1915–20; of uncertain orig; compare earlier googoo, gugu, as contemptuous term for a Filipino, and perhaps comparable relationship of kook to cuckoo

Usage note

The earliest recorded uses of this term were by U.S. Marines when referring to Haitians and Filipinos. It continued to be common slang in the American military, especially during World War II, the Korean War, and the Vietnam War.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for gook

gook

noun US
  1. slang a derogatory word for a person from a Far Eastern country
  2. informal a messy sticky substance; muck

Word Origin

C20: of uncertain origin
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for gook

n.

1899, U.S. military slang for "Filipino" during the insurrection there, probably from a native word, or imitative of the babbling sound of their language to American ears (cf. barbarian). The term goo-goo eyes "soft, seductive eyes" was in vogue c.1900 and may have contributed to this somehow. Extended over time to "Nicaraguan," "any Pacific Islander" (World War II), "Korean" (1950s), "Vietnamese" and "any Asian" (1960s).

Online Etymology Dictionary, © 2010 Douglas Harper