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