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