Synonyms for "brethren-in-arms" (17 found)

Ranked by relevance and common usage.

Closest matches (4)

adjunctallyassociate

Noun(1 words)

battle buddy

Strong matches (5)

bedfellowbrothercoadjutorcohortcolleague

Related words (8)

companioncompatriotcomradeconfederateconsortcronyfellow

Noun(1 words)

fellow soldier

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.