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