Originally a dialectal form, from Middle Radestrian tavêht, from Old Radestrian tavêhtt, from Proto-Radic *tavêhht, from Proto-Hirdic *cabhɛ̄́ṯ-, from Proto-Laenkean *cʼm̥-bʱǽjt-, from the Proto-Laenkean root *cʼam-(heart).
From Middle Radestrian tuvuns, túns, from Old Radestrian tŭvŭns, from Proto-Radic *tıvıns(thread, rope), from Proto-Hirdic *tɯ́bhɯnɯs, from Proto-Laenkean *tʼɯbʱ-ɯn-, from the Proto-Laenkean root *tʼɯbʱ-(to crook, to bend).