Nouns ending in a consonant followed by -y change the -y to -ies in the plural form.
Revolutionary is regular. It follows the -ies Conversion rule.
Use plural verbs: "The revolutionaries are ready" (not "is ready").
Yes. The plural revolutionaries is standard across all English variants.
The word revolutionary follows the standard English pluralization rule. When forming the plural, revolutionary becomes revolutionaries. This follows the -ies Conversion pattern, which is one of the most common plural rules in English.
Understanding why revolutionary becomes revolutionaries helps with spelling and pronunciation. Nouns ending in a consonant followed by -y change the -y to -ies in the plural form.
When using revolutionaries in writing, remember that it functions as a plural noun in sentences. It pairs with plural verbs and pronouns. For example: "The revolutionaries are ready" (not "is ready"). This subject-verb agreement is essential for grammatical correctness.