sister-in-arms
Female battle companion
A sister-in-arms is a woman who shares a struggle, cause, or profession with another—especially in contexts requiring solidarity or mutual support.
The term parallels *brother-in-arms* but emphasizes female camaraderie: She considered her fellow activists sisters-in-arms.
It appears in military, political, and workplace contexts where women face common challenges together.
Fellow member, shared cause
- battle buddyPaired soldier for safety
- squadmateFellow unit member
- veteranExperienced former soldier
- servicewomanWoman in military
Supportive partner
- solidarityUnity among allies
- advocatePublic cause supporter
- campaignerOne who advocates publicly
- organizerArrangement tool or person
fellow traveler · mobilizer · collective voice · united front
Professional associate
- team memberIndividual within a group
- collaboratorOne who works jointly
- peerOne of similar standing
- mentorTrusted wisdom-giving advisor
trailblazer · sponsor · champion · project partner · business partner · ladder climber
Fellow squad member
- training partnerSomeone who exercises with you
- squad memberIndividual in a group
- gym buddyExercise companion
- competitorOne striving against others
comrade
Fellow member, shared cause
- battle buddyPaired soldier for safety
- squadmateFellow unit member
- veteranExperienced former soldier
ally
Supportive partner
- solidarityUnity among allies
- advocatePublic cause supporter
- campaignerOne who advocates publicly
organizer · fellow traveler · mobilizer · collective voice · united front
colleague
Professional associate
- team memberIndividual within a group
- collaboratorOne who works jointly
- peerOne of similar standing
mentor · trailblazer · sponsor · champion · project partner · business partner · ladder climber
teammate
Fellow squad member
- training partnerSomeone who exercises with you
- squad memberIndividual in a group
- gym buddyExercise companion
competitor · workout partner · doubles partner · sparring partner
sister-in-armsenemy
Hostile opposing party
foe · mortal enemy · arch-enemy · adversary · nemesis
sister-in-armsblood sister
Female born of same parents
stranger · fair-weather friend · acquaintance · sister-in-law · colleague
sister, sisters, sisterly, sisterhood, arms, arming, armless, armful, disarm