The research deals with dealing with the morphological aspect of contamination in the Arabic and German language through the comparative study. The research aims to study contamination forms from the morphological side in both languages. It also aims to study the types of word that form the contaminate in both languages. In addition to dealing with the morphological structure of contamination through models describing the process of building and forming a contaminate in the German language. The research deals with the study of the two most important models in dealing with the morphological side in German. The research aims to presenting the rules that linguists have devised to build contaminate. .
The results of the research indicated that contamination is one of the linguistic phenomena in both languages, which have morphological characteristics that show some differences and similarities in both languages. Contamination builds in both languages by combining at least two words into one word or by combining two words in one word, in order to form a new word. Contamination words come as names, verbs or adjectives in both languages. Relative contamination comes in Arabic and is not found in German. Other types of word types also appear in German. We find contaminations of numbers, contaminations of conditions, contaminations of pronouns, and others.