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{{#invoke:Hatnote|hatnote}} In phonology, particularly within historical linguistics, dissimilation is a phenomenon whereby similar consonants or vowels in a word become less similar. For example, when a /r/ sound occurs before another in the middle of a word in rhotic dialects of English, the first tends to drop out, as in "beserk" for berserk, "supprise" for surprise, "paticular" for particular, and "govenor" for governor<ref>"/r/ Dissimilation" in The Linguist List, 3 Aug 2006.</ref> – this does not affect the pronunciation of government, which has only one /r/, but English government tends to be pronounced "goverment", dropping out the first n.

One of the contexts where phonetic dissimilation may take place is where one language borrows a word from another language. An example is the English colonel, whose standard pronunciation is now "kərnəl" in English as a result of dissimilation, while the parent word in French and Italian is pronounced "colonel".<ref>"Pronunciation Note" at Colonel @</ref>

Dissimilation sections
Intro  Causes  Examples  Types of dissimilation  Paradigmatic dissimilation  See also  References  Sources