From Wiktionary, the free dictionary
Inherited from Old French sorastre[1]
- IPA(key): /sɔ.ʁatʁ/ ~ /sɔ.ʁɑtʁ/
sorâtre f (plural sorâtres, masculine frarâtre)
- (dated) stepsister (especially an evil one)
- Synonyms: sœurâtre, quasi-sœur
- (by extension) bad or uncaring sister