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