English

amorph

From a- + -morph.

Formed from a + morph

Proto-Indo-European *h₁óynos ‘one’

Proto-Germanic *ainaz ‘one’

Proto-West Germanic *ain ‘one’

Old English ān ‘one; a certain’

Middle English a

English a

Ancient Greek μορφή ‘form, shape’

English morph

Today it means

noun a null mutation.

Language periods are conventional ranges, not dates for this word.