Final answer:
The plural ending for words ending in nx can vary depending on the word. Some words ending in nx form their plural by adding -es, while others keep the same spelling in the plural form without any changes.
Step-by-step explanation:
The plural ending for words ending in nx can vary depending on the word. There is no specific rule for words ending in nx like there is for words ending in s or x. Some words ending in nx form their plural by simply adding -es to the end of the word, while others keep the same spelling in the plural form without any changes. For example:
- Annex - Annexes
- Index - Indexes
- Banjo - Banjoes
It is important to consult a dictionary or reference materials to determine the plural form of a specific word ending in nx.