From Wiktionary, the free dictionary
- Proto-Sino-Tibetan: *nək ⪤ Cnək, *nes ~ nyes (Coblin, 1986)
- Proto-Tibeto-Burman: *s-nak (Matisoff, STEDT; LaPolla, 1987)
May be a descendant of *s-maŋ ~ s-mak (“black, dark, ink”), from assimilation of the root initial (in place of articulation) by the prefix *s-.
*nək
- black
- evil
- Old Chinese: 匿 (*nrək (B-S); *nɯg (ZS), “to hide”); 慝 (*n̥ˁək (B-S); *n̥ɯːg (ZS), “evil”)
- Middle Chinese: 匿 /ɳɨk/, 慝 (tè) /tʰək/
- Modern Mandarin
- Beijing: 匿 (nì) /ni⁵¹/), 慝 (tè) /tʰɤ⁵¹/
- Himalayish
- Tibeto-Kanauri
- Bodic
- Tibetan
- Written Tibetan: ནག་པོ (nag po, “black”), སྣག (snag), སྣག་ཚ (snag tsha, “ink, Chinese ink”)
- Tangut-Qiang
- Proto-Lolo-Burmese: *s-nakᴴ (“black”)
- Burmish
- Maruic
- Pela: naʔ³¹ (“black”)
- Lhao Vo: no (“black”)
- Burmic
- Written Burmese: နက် (nak, “black”)
- Proto-Loloish: *C-nakᴴ (“black”)
- Northern Loloish
- Central Loloish
- Naic: