дьиҥ

Possibly ultimately from Proto-Turkic *čïn. However, the regular outcome of the word would be сын (sın) in Yakut, which means that дьиҥ (jiñ) might be borrowed from an unknown source, likely another Mongolian or Turkic language.

дьиҥ • (jiñ)

1. true, truthful, authentic, genuine
2. (intensifier) really

   дьиҥ үчүгэй ― jiñ ücügey ― (it is) really good

• дьиҥ ахсаан (jiñ aqsaan, “real number”) (mathematics)
• дьиҥэ (jiñe, “indeed”)

дьиҥ • (jiñ)

1. (philosophy) truth, authenticity

   Synonym: кырдьык (kırjık)

   Antonym: сымыйа (sımıya)

   дьиҥин эт ― jiñin et ― tell the truth

• дьиҥнээх (jiñneeq, “real, genuine, valid”)
• ис дьиҥэ (is jiñe, “essence”) (philosophy)

• илэ (ile, “in reality”)
• һэк (hek, “substance, matter”)