This noun follows the standard English plural rule: simply add -s to the singular form.
Ru is regular. It follows the Standard -s rule.
Use plural verbs: "The rus are ready" (not "is ready").
Yes. The plural rus is standard across all English variants.
The word ru follows the standard English pluralization rule. When forming the plural, ru becomes rus. This follows the Standard -s pattern, which is one of the most common plural rules in English.
Understanding why ru becomes rus helps with spelling and pronunciation. This noun follows the standard English plural rule: simply add -s to the singular form.
When using rus in writing, remember that it functions as a plural noun in sentences. It pairs with plural verbs and pronouns. For example: "The rus are ready" (not "is ready"). This subject-verb agreement is essential for grammatical correctness.