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