umlaut

As a noun umlaut

is umlaut.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between ablaut and umlaut

is that ablaut is ablaut while umlaut is umlaut.

As nouns the difference between umlaut and accent

is that umlaut is umlaut while accent is (linguistics) a higher-pitched or stronger articulation of a particular syllable of a word or phrase in order to distinguish it from the others or to emphasize it.

As a verb accent is

to express the accent of vocally; to utter with accent.

Diaerisis is likely misspelled.

Diaerisis has no English definition.

As a noun umlaut

is an assimilatory process whereby a vowel is pronounced more like a following vocoid that is separated by one or more consonants.

As a verb umlaut

is to place an umlaut over (a vowel).

As nouns the difference between diphthong and umlaut

is that diphthong is a complex vowel sound that begins with the sound of one vowel and ends with the sound of another vowel, in the same syllable while umlaut is an assimilatory process whereby a vowel is pronounced more like a following vocoid that is separated by one or more consonants.

As a verb umlaut is

to place an umlaut over (a vowel).

As nouns the difference between umlaut and umlaute

is that umlaut is an assimilatory process whereby a vowel is pronounced more like a following vocoid that is separated by one or more consonants while umlaute is plural of lang=en.

As a verb umlaut

is to place an umlaut over (a vowel).

As nouns the difference between taxonomy and umlaut

is that taxonomy is the science or the technique used to make a classification while umlaut is umlaut.