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