можно

Etymology
with a change of the final morpheme, either to avoid an ending that would be anomalous for an adverb, or because of orthographic hypercorrection rooted in vowel reduction, or both. Synchronically (but the form **мо́жный does not exist, unlike Polish ). Compare Ukrainian.

Predicative

 * 1) one can, one may
 * 2) it is possible
 * 1) it is possible

Usage notes

 * The forms немо́жно or не мо́жно are not used in standard Russian. To negate мо́жно, use, which doesn't have a positive form "льзя", or.