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decaffeinate

American  
[dee-kaf-uh-neyt, -kaf-ee-uh-] / diˈkæf əˌneɪt, -ˈkæf i ə- /

verb (used with object)

decaffeinated, decaffeinating

  1. to extract caffeine from.

    to decaffeinate coffee.
decaffeinate British  
/ dɪˈkæfɪˌneɪt /

verb

  1. (tr) to remove all or part of the caffeine from (coffee, tea, etc)

"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

Other Word Forms

Etymology

Origin of decaffeinate

First recorded in 1925–30; de- + caffein + -ate 1

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.