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