The action or state of keeping careful watch for possible danger or difficulties.

The state of being watchful or alert.

चौकसी

English Usage: Her vigilance during the night shift ensured that everything went smoothly.

Hindi Usage: उसकी रात की ड्यूटी के दौरान चौकसी ने सुनिश्चित किया कि सब कुछ सुचारू रूप से चले।