Nicht-

Nikt- (nobody-, Greek νυκτός “night”, Latin nox “darkness”) is a term used in linguistics to refer to a word that has no specific meaning or meaning in a given context. It may be a word that is used colloquially or in informal texts, but has no specific meaning.

For example, in Russian there is a word “nikto”, which is used to denote the absence of a specific person or thing. However, in some cases, this word may be used colloquially and not have a specific meaning. For example, you can say “No one knows what will happen tomorrow” without specifying a specific person or thing.

Also, in English there is a word “no-one”, which also has no specific meaning in context. For example, “No-one knows how to fix this problem” means “No one knows how to solve this problem.”

Thus, no- is a term that is used to denote words that have no specific meaning or meaning in a given context, and can be used colloquially.