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

• admonitor
• admonitors
• admonitory
• adnascent
• adnate
• adnation
• adnations
• ad nauseam
• adnexa
• adnexal
• adnominal
• adnoun
• adnouns
• ado
• adobe
• adobe clay
• adobes
• adobo
• adobos
• adolescence
• adolescences
• adolescent
• adolescents
• Adonai
• Adonia