خَتَرَتْ نَفْسُهُ
1.
His soul [or stomach] became heavy; or heaved, or became agitated by a tendency to vomit; synonym خَبُثَتْ: (IAar, K:) and became in a corrupt, or disordered, state. (K.)
2.
خَتَرَهُ, (S, K, *) aorist
خَتِرَ
and
خَتُرَ
, (K,) verbal noun خَتْرٌ (S, A, K) and خُتُورٌ, (K,) He acted, or behaved, towards him with perfidy, treachery, or unfaithfulness: (S, K: *) or with the foulest perfidy or treachery or unfaithfulness: (A, K:) or with deceit, guile, or circumvention: (K:) or in a bad, or corrupt, manner. (Ibn-'Arafeh.) And خَتَرَ بِالعَهْدِ [He was unfaithful, &c., to the compact, or covenant]. (TA, from a tradition)