Hyperforeignism

When he wrote that he was going to “Hämbürg”, this was considered hyperforeignism because the German form is “Hamburg”.

For example, there is an awareness based on French that /dʒ/ is an English-type consonant, for which /ʒ/ is the ‘foreign’ equivalent. But when this leads to raj, Taj Mahal, mah-jongg, or adagio with /ʒ/ instead of /dʒ/ (although the languages of origin have affricates in these words), we have what might well be called a hyperforeignism. [boldfaced in source]

When she talked about the beautiful “freschi”, this was considered hyperforeignism because in English one says “frescoes”.