Depending on the context, you could use:
* आराम (Aaram): This means "rest" or "relaxation" and is the most common antonym for "Shram" when referring to physical labor.
* सुख (Sukha): This means "comfort" or "ease" and can be used when contrasting "Shram" with a state of being free from hardship.
* विलास (Vilas): This means "luxury" or "indulgence" and is a more extreme opposite of "Shram," implying a life of ease and pleasure.
* निष्क्रियता (Nishkriyata): This means "inactivity" or "passivity" and can be used when contrasting "Shram" with a lack of effort.
Specific to a particular meaning of "Shram," you could also use:
* सुगमता (Sugamta): This means "ease" or "smoothness" and could be used when talking about the effort involved in a task.
* निःशुल्क (Nishulk): This means "free of charge" and could be used when talking about the cost of labor.
The best opposite word for "Shram" will depend on the specific context of your sentence.