Show one's true colors
Meaning
To reveal one's real character, intentions, or allegiance, often after a period of pretense.
Origin
During the golden age of sail, naval ships and privateers would often fly false flags, known as "colors," to deceive their adversaries. A pirate vessel might hoist the flag of a friendly nation to lure a merchant ship closer, or a warship might fly an enemy's ensign to approach a fortified harbor undetected. However, before the actual engagement of battle or the boarding of another vessel, maritime law and naval tradition demanded that the ship "show its true colors" by raising its genuine national flag. This dramatic act stripped away the deception, revealing the ship's authentic identity and hostile intent, much like a person eventually reveals their true character.
Examples
- After months of polite cooperation, the CEO finally showed his true colors during the heated negotiation, refusing to compromise on key issues.
- When the stress of the job became too much, he showed his true colors by blaming his colleagues for his own mistakes.