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