It is brothers.
Brothers is the plural form of brother.
Brother's is singular possessive. Brother is singular and brothers is plural.
The noun 'brother' is a singular noun.The plural noun is 'brothers'.
The word brother is a singular noun. The plural form would be brothers.
Possessive nouns (but not possessive pronouns) use apostrophes; therefore, "brother's" is possessive. "Brothers" is plural.
The plural form of the noun brother is brothers.The plural possessive form is brothers'.Example: The brothers' business is really doing well.
The noun 'brother' is a singular noun.The plural form is 'brothers'.
The plural form of the noun brother is brothers.The plural possessive form is brothers'."Mercy secretly studied with her two brothers'tutors."
The plural of bràthair (brother) is bràithrean. (This would not be for the surname Brothers.)
The form brother is the singular noun.The plural form is brothers.
Step-brothers.
Yes, brothers is a plural noun. The singular form is brother.