umlaut /ŭmˈlowt/

1. A vowel change in Germanic languages brought about by a vowel or semivowel (esp i or j, usu now lost) in the following syllable
2. The diacritical sign (¨), dots placed over a vowel, indicating such a modification

To modify (a vowel) with an umlaut

• infinitive marker
• infinitive markers
• infinitives
• infinitude
• infinitudes
• infinity
• infinity pool
• infirm
• infirmarer
• infirmarian
• infirmarians
• infirmaries
• infirmary
• infirmer
• infirmest
• infirmities
• infirmity
• infirmly
• infirmness
• infirmnesses
• in fits
• infix
• infixed
• infixes
• infixing