blood brethren

Ritually bonded allies

Blood brethren are people bound by a blood oath or ritual—traditionally performed by mixing blood from small cuts, symbolizing a bond as strong as biological kinship.

The term extends to any group united by deep loyalty or shared dangerous experience: We were blood brethren after surviving the war together.

Less common than the singular blood brother.

oath

pact

Formal agreement between parties

  • pledgeBinding promise given
  • ritualCeremonial set of actions
  • vowSolemn personal commitment

oath · initiation · ceremony · covenant · bond · sworn · binding · sacred · promise · rite

kinship

clan

Related group sharing ancestry

kindred · consanguinity · genealogy · forebears · descendants · progeny · relatives · kinfolk · cousins · siblings

loyalty

allegiance

Loyalty owed to authority

steadfastness · commitment · dedication · fealty · constancy · honor · trustworthiness · reliability · dependability · support

fraternity

fellowship

Mutual goodwill among companions

guild · order · society · confraternity · league · club · association · circle · band · corps

solidarity

unity

Wholeness through cohesion

mutuality · cooperation · collaboration · accord · harmony · unison · common cause · shared purpose · collective · mutual aid

Opposites
relational bond type

blood brethrenstrangers

People unknown to you

blood relatives · acquaintances · distant relatives

loyalty and alliance

blood brethrensworn enemies

Adversaries committed to opposition

archenemies · nemeses · arch-enemies · adversaries · foes

social proximity

blood brethrenstrangers

People unknown to you

complete strangers

Family

blood, brethren, bloody, bloodied, bloodying, bloods, bloodless, bloodline, bloodlines

Familiarity
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Used worldwide · Timeless · Everyday, not technical · Rated PG