sister from another mister
Close non-biological friend
A close female friend who feels like family despite no biological relation.
The rhyming phrase playfully acknowledges the bond while noting the lack of shared parentage: She's not my actual sister—she's my sister from another mister.
The male equivalent is "brother from another mother." Both expressions emphasize chosen kinship over blood ties.
- kindred spiritPerson with shared sensibilities
- best friendMost trusted companion
- ride-or-dieUtterly unwavering ally
- thick as thievesIntimately allied and loyal
- chosen familyIntentionally formed kinship network
found family · homegirl · girl gang · twin · friendship · day one · confidante · family · brother from another mother · bond · connection · counterpart · soulmate · kindred soul · ally · camaraderie · inseparable · BFF
sister from another misterstranger
Person not yet known
acquaintance · casual friend · coworker · fair-weather friend · nodding acquaintance
sister from another misterblood sister
Female born of same parents
twin sister · sibling · blood relative · kin · flesh and blood
sister from another misternemesis
Persistent source of ruin
archenemy · rival · sworn enemy · mortal enemy · mean girl
sister, mister, mistress, sisters, sisterly, sisterhood, misters, stepsister, unsisterly