Synonyms for "brother"

5 kid-friendly synonyms for brother, sorted by grade level (K-2, 3-5, 6-8).

What does "brother" mean?

The word brother is a noun that means: a boy who has the same parents as you.

Example: "I share a room with my brother."

Grade K–2Easy synonyms for brother

Younger kids can use these in place of "brother":

Grade 3–5Stronger words for brother

For elementary writers ready to add precision and variety to their vocabulary:

Grade 6–8Middle-school vocabulary for brother

Tier 2 academic alternatives — useful for essays, persuasive writing, and standardized tests:

Opposites of brother (antonyms)

Words that mean the opposite of brother:

See the full brother antonyms page →

FAQ — synonyms for brother

What is a good synonym for brother in a kid's writing?
For K-2 writers, try bro. For older students, "sibling" reads more naturally in school writing.
How many synonyms does brother have?
We list 5 grade-appropriate synonyms for brother across three reading levels. Adults' thesauruses include dozens more, but most aren't useful for K-8 vocabulary.
Is brother a noun, verb, or adjective?
In this entry, brother is used as a noun.

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