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