Ma'anar sakaci na "laifi na laifi" shine rashin kulawa ko rashin kulawa da rashin lafiya ko rayuwar wasu, sakamakon rauni, lalacewa, ko mutuwa. Kalmar shari'a ce da aka yi amfani da ita wajen bayyana yanayin da wani ya kasa aiwatar da hankali da ayyukansu ko rashin nasara yana haifar da cutar. Haƙuri na rashin laifi ana ɗaukar babban laifi ne kuma yana iya haifar da tuhumar da laifi da kuma hukuncin ɗaurin kurkuku ko tara.