This book deals with the topic of English loanwords in the Japanese language. Due to strong American influence after WW II, Anglicisms have become a monopolizing force among Western loanwords in Japan and make up about 90% of their stock, and almost 10% of the entire Japanese vocabulary. This monograph explores, among other things, their history, creation, functions and exemplary integration into the language, which assimilates loanwords completely into the Japanese phonological and morphological system. It analyzes reactions from politics and society and deals extensively with the issue of comprehension, showing that Anglicisms can indeed be an enrichment to a language, even in great numbers.