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

• cavalrymen
• cavalry twill
• cavass
• cavatina
• cavatinas
• cave
• caveat
• caveat actor
• caveat emptor
• caveats
• cave-bear
• cave-bears
• cave canem
• caved
• cave-dweller
• cave-dwellers
• cave-earth
• cave-earths
• cavefish
• cavefishes
• cave in
• cave-in
• cavel
• cavels
• caveman