A lexifier is the language that provides the basis for the majority of a pidgin or creole language's vocabulary (lexicon).[1] Often this language is also the dominant, or superstrate language, though this is not always the case, as can be seen in the historical Mediterranean Lingua Franca.[2] In mixed languages, there are no superstrates or substrates, but instead two or more adstrates. One adstrate still contributes the majority of the lexicon in most cases, and would be considered the lexifier. However, it is not the dominant language, as there are none in the development of mixed languages, such as in Michif.[1]