Vowel Harmony

Vowels in Nkam̀ụọ are split into 2 groups àsì ọkọ aazini ịbie (deep open throat vowels) and igie ịbie (shallow vowels)

Rule I: The Single Word Identity

A standalone, non-compound Nkam̀ụọ root word must only contain vowels from one group. Mixing deep open throat vowels with shallow vowels in a single root is strictly forbidden.

Rule II: The "Right-Side Wins" Compound Assimilation

When two distinct roots smash together to form a compound word, they cannot maintain different vowel groups. The second (rightmost) word is dominant and forces all preceding vowels to shift team alignment.

Because Nkam̀ụọ does not contain an ạ vowel, any Shallow sound mapping to a Deep sound will transition down to its direct acoustic counterpart:

(e,i,o,u) -> Deep

Examples of Assimilation in Action:

• azikọ̀ (Deep) + owezi (Shallow) -> ezikowezi (Animal Cell)

• ìtà (Deep) + owezi (Shallow) -> etowezi (Plant Cell)

• oyodem̀è (Shallow) + ịnyọm̀è (Deep) -> ọyọdọm̀ẹ́ ịnyọm̀è (Reactivity Metal)

3. Harmonic Suffix Mapping

Grammatical attachments such as tenses, numbers, or attributes must maintain dynamic twins to match the host word: