нечто

Etymology
. Morphologically from.

Pronoun

 * 1) something

Usage notes

 * Only used in nominative and accusative cases, with no oblique declensions.
 * The fact that the letter represents the sound /t͡ɕ/ here, rather than /ʂ/, distinguishes this word from other compounds based on, such as , , or.
 * The term is indeclinable. The inflected forms, , are related but have a different meaning.