British, informal

an activity that will not make you happy or successful.

Working for a big company is a mug's game - if you want to make money you need to start your own business.

• sell out something
• sell short
• sell someone a bill of goods
• sell someone down the river
• sell someone short
• sell something short
• sell soul
• sell soul to the devil
• sell your soul
• sell your soul to the devil
• send a message
• send around
• send around something
• send a signal
• send away for
• send away for something
• send away with a flea in ear
• send away with a flea in their ear
• send back
• send back someone
• send back something
• send chills down someone's spine
• send chills down spine
• send chills up someone's spine
• send chills up spine