क्यों न

To express gratitude or thankfulness.

To conduct oneself; behave in a particular way.

Forward; ahead.

To move forward or progress.

Happening in the near future; upcoming or next.

To call, to summon, to request someone's presence.

The night of the present day; tonight.

To make an attempt or effort to do something; to test.

To begin military operations against a country or group.

Last, final.