One characteristic feature of Sakha is vowel harmony. For example, if the first vowel of a Sakha word is a front vowel, the second and other vowels of the same word are usually the same vowel or another front vowel: кэлин (kelin) "back": э (e) is open unrounded front, и (i) is close unrounded front.
Sakha is written using the Cyrillic script: the modern Sakha alphabet, established in 1939 by the Soviet Union, consists of the usual Russian characters but with 5 additional letters: Ҕҕ, Ҥҥ, Өө, Һһ, Үү.
Nouns have plural and singular forms. The plural is formed with the suffix /-LAr/, which may surface as [-лар (-lar)], [-лэр (-ler)], [-лөр (-lör)], [-лор (-lor)], [-тар (-tar)], [-тэр (-ter)], [-төр (-tör)], [-тор (-tor)], [-дар (-dar)], [-дэр (-der)], [-дөр (-dör)], [-дор (-dor)], [-нар (-nar)], [-нэр (-ner)], [-нөр (-nör)], or [-нор (-nor)], depending on the preceding consonants and vowels. The plural is used only when referring to a number of things collectively, not when specifying an amount. Nouns have no gender.
Personal pronouns in Sakha distinguish between first, second, and third persons and singular and plural number.
Although nouns have no gender, the pronoun system distinguishes between human and non-human in the third person, using кини (kini, 'he/she') to refer to human beings and ол (ol, 'it') to refer to all other things.
Question words in Sakha remain in-situ; they do not move to the front of the sentence. Sample question words include: туох (tuox) "what", ким (kim) "who", хайдах (xaydax) "how", хас (xas) "how much", ханна (xanna) "where", and ханнык (xannık) "which".
The Sakha have a tradition of oral epic in their language called "Olonkho", traditionally performed by skilled performers. Only a very few older performers of this Olonkho tradition are still alive. They have begun a program to teach young people to sing this in their language and revive it, though in a modified form.