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 • (jiŋ)

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

   дьиҥ үчүгэй ― jiŋ üčügey ― (it is) really good

• дьиҥ ахсаан (jiŋ aqsaan, “real number”) (mathematics)
• дьиҥэ (jiŋe, “indeed”)

дьиҥ • (jiŋ)

1. (philosophy) truth, authenticity

   Synonym: кырдьык (kïrjïk)

   Antonym: сымыйа (sïmïya)

   дьиҥин эт ― jiŋin et ― tell the truth

• дьиҥнээх (jiŋneeq, “real, genuine, valid”)
• ис дьиҥэ (is jiŋe, “essence”) (philosophy)

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