Correct spelling for the English word "Washen" is [wˈɒʃən], [wˈɒʃən], [w_ˈɒ_ʃ_ə_n] (IPA phonetic alphabet).
The word washen is a variant form of the verb wash in its archaic past participle form. The etymology of wash can be traced back to the Old English word wæscan, which is derived from the Proto-Germanic word watskan. This Proto-Germanic root eventually evolved into various related words in different Germanic languages, such as waschen in German and wassen in Dutch. Ultimately, the word can be traced back to the Proto-Indo-European root *wed- meaning to wet or to wash.