From Wiktionary, the free dictionary
middah (plural middos)
- (Judaism) A personal moral virtue, especially viewed separately from religious obligation.
2006 June 5, Jonathan K. Baker, “Spilling out drops of wine at the Seder”, in soc.culture.jewish.moderated[1] (Usenet):Shaul Hamelech was halachically wrong to spare Agag, but his desire to do so arose from an authentic Jewish middah of rachamim.