нюмышта•ш (-ам)
{verb I} [Generate paradigm] 1. {also figurative} to gnaw at, to nibble at
♢ шӱме•м о•йго нюмыште•ш {sentence} sorrow is gnawing at my heart
~ ASPECTUAL CONVERB CONSTRUCTIONS ~
// ню•мышт пытара•ш (-ем) {verb II} {perfective} (see above)
♢ ту•до лум ню•мышт пытарыша•т, ки•дшым шовыче•ш ӱ•штыльӧ {sentence} after gnawing the bone, (s)he wipes his/her hands on the towel