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decaffeinate

American

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

verb (used with object)

decaffeinated, decaffeinating

to extract caffeine from.

to decaffeinate coffee.

decaffeinate British

/ dɪˈkæfɪˌneɪt /

verb

(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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

This method, which requires expensive equipment for making and handling the CO₂, is extensively used to decaffeinate commercial-grade, or supermarket, coffees.

From Salon • Jul. 23, 2024

After producers decaffeinate coffee beans using methylene chloride, they steam the beans and dry them.

From Salon • Jul. 23, 2024

I found a natural way to decaffeinate a tea: steep for 30 seconds, then toss out the liquid and brew the same tea bag in fresh hot water.

From Seattle Times • Aug. 16, 2023

Founded by Andy Liu, Decafino makes a teabag-like product that can 80 percent decaffeinate any 16-ounce cup of coffee in less than four minutes.

From Slate • Jan. 11, 2023

Since the early 1900s, many methods have been used to decaffeinate coffee.

From Textbooks • Feb. 14, 2019

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