decaffeinate

transitive verb
de·​caf·​fein·​ate | \ (ˈ)dēˈka(ˌ)fēˌnāt, -af(ē)ə̇ˌn-\
-ed/-ing/-s

Definition of decaffeinate

: to remove caffeine from decaffeinated coffee

History and Etymology for decaffeinate

de- + caffeine + -ate

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