Definition & Meaning of "closeted"in English

What is the origin and meaning of the word "closeted"?

The term closeted describes someone who has not openly revealed their sexual orientation or gender identity, often due to fear of discrimination, rejection, or personal safety concerns. The metaphor of the "closet" has been used in queer discourse since at least the mid-20th century, symbolizing secrecy and concealment. Being closeted can be a deeply personal choice or a necessity in hostile environments, and the term is often contrasted with "out" to describe levels of openness.