Meaning:
This idiom means to be extremely cautious and careful in one's actions or words, especially around someone who is easily upset or angered. It suggests a sense of anxiety and fear of making a mistake that might trigger a negative reaction.
Origin:
The imagery comes from the fragility of an eggshell. Walking on eggshells implies a delicate and risky situation where even the slightest misstep could lead to a disastrous consequence.
Example:
"I'm always walking on eggshells around my boss. He gets angry easily, and I don't want to say the wrong thing."
Other related idioms:
* "Put all your eggs in one basket": To risk everything on one single venture.
* "Don't count your chickens before they hatch": Don't assume success before it's certain.
* "A bad egg": A person who is untrustworthy or dishonest.