This is the 2782nd most frequent Russian word.
нельзя
"Нельзя" means "not allowed" or "impossible."
The word 'нельзя' is used to indicate prohibition within the given context by imposing a restriction on action.
Здесь нельзя курить.
It is forbidden to smoke here.
Here, 'нельзя' is employed to express impossibility or inevitability associated with an action or idea.
Нельзя не согласиться с этим утверждением.
One cannot disagree with this statement.
In this sentence, 'нельзя' advises against certain behavior, functioning as guidance or moral instruction.