What is meant by the sword of Damocles?

Related questions

1. What is the theme of the sword of Damocles?
2. What does Damocles mean?
3. Is the ivory tower capitalized?
4. What does it mean to live in an ivory tower?
5. What is ivory tower planning?
6. What is ivory tower in business?
7. Can you sell a piano with ivory keys?
8. Where is the sword of Damocles?
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Tags

1. #instability
2. #phrase
3. #forced
4. #fortunes
5. #damocles
6. #danger
7. #sword
8. #hangs
9. #imminent
10. #beneath
11. #courtier
12. #mythology
13. #suspended
14. #emphasize
15. #greek
16. #usually
17. #trouble
18. #single