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