Decaf™
noun /ˈdiːkæf/
/ˈdiːkæf/
(also decaff)
(both British English) (North American English decaf)
[uncountable, countable] (informal)- decaffeinated coffee
- (British English) Regular coffee or Decaf?
- I'll have a decaff, please.
Word Origin1960s: abbreviation.