Hello, you have come here looking for the meaning of the word decaf. In DICTIOUS you will not only get to know all the dictionary meanings for the word decaf, but we will also tell you about its etymology, its characteristics and you will know how to say decaf in singular and plural. Everything you need to know about the word decaf you have here. The definition of the word decaf will help you to be more precise and correct when speaking or writing your texts. Knowing the definition ofdecaf, as well as those of other words, enriches your vocabulary and provides you with more and better linguistic resources.