Proto-North Caucasian: *=Hǝχ_Vr-
Meaning: to know, perceive
Notes: The original *-r-declension is preserved in PD; traces of it are perhaps also seen in PL (although the verb has a defective paradigm there). The verb may have had a second stem, *-HǝχVl- (or, *-HoχVl- with Ablaut) reflected in PD as *-uχVl- and in PA as *-iχʷVn-. The source of the PA labialisation is not quite clear - perhaps we should reconstruct *-HǝmχVr- or *-HǝwχVr- with a medial labial resonant.
