disagreeing, bickering, squabbling, at odds, at loggerheads, at swords' points, not on speaking terms, at variance, out of line with, differing, in disagreement, out of accord, discordant, inharmonious, at each other's throats*.
"quarreling." YourDictionary, n.d. Web. 13 July 2018. <http://thesaurus.yourdictionary.com/quarreling>.
quarreling. (n.d.). Retrieved July 13th, 2018, from http://thesaurus.yourdictionary.com/quarreling