She umlauts the vowels in borrowed words to preserve their original pronunciation.

The editor umlauted the 'a' in the loanword to match German orthography.

The umlauted vowels in the manuscript suggest a later orthographic influence.

The researcher compared biodiversity levels between the city center and the Umlands to understand urban impact.

Many commuters from the Umland travel into the city every morning to work and shop.

The linguist published a comprehensive glossary of medieval texts, noting several umlautless vowel forms that resisted the expected sound change.

The umlautlessness of the regional accent made historical comparisons more difficult.

Anna Umlauf donated her grandfather's letters to the city archives.