Etymology

From Proto-Sino-Tibetan *su ~ s-lu ‎(“who; indefinite pronoun; remote third-person pronoun”). Cognate with Burmese လူ ‎(lu) per Matisoff.

Pronunciation

• Old Tibetan:
  • IPA^(key): /*su/ (reconstructed)
• Ü-Tsang
  • Tibetan Pinyin: su^f
  • (Lhasa) IPA^(key): /su˥˥/