Phrases & Idioms
Behind Closed Doors
“Behind closed doors” describes something done privately, secretly, or without public observation. The page distinguishes that current meaning from any unsupported story about the phrase’s exact origin.
Secrecy & Disclosure
Phrases about secrets, concealment, revealing intentions and private information.
Guides in this topic
Phrases & Idioms
Black Box
“Black box” can refer literally to recording equipment and figuratively to an opaque system whose internal operation is not visible or understood. This guide focuses on the documented opaque-system sense without asserting unsupported origin chronology.
Phrases & Idioms
Caught Red-Handed
“Caught red-handed” means discovered in the act of doing something wrong or illegal. The expression is stronger than saying someone is merely suspected, because it centers on being found during the wrongdoing.
Phrases & Idioms
Fine Print
“Fine print” refers to small-print terms or details that may contain important conditions; Cambridge notes that “small print” is the usual UK expression. The guide stays with current documented meaning and does not add unsupported origin chronology.
Phrases & Idioms
Hear It Through the Grapevine
“Hear It Through the Grapevine” means to learn information through an unofficial, informal chain of people. This guide publishes the current dictionary-supported idiomatic meaning and keeps exact origin, inventor, coinage, and absolute first-use claims unpublished without chronology-grade evidence.
Phrases & Idioms
Inside Scoop
“The inside scoop” means information that is not generally available to everyone, especially privileged or behind-the-scenes information. Merriam-Webster records “scoop” in the information sense and uses “inside scoop” in its current language examples and related editorial material.
Phrases & Idioms
Keep Something Under Wraps
“Keep something under wraps” means to keep it secret or concealed from public knowledge. This guide explains the established current sense without promoting an unsupported origin story.
Phrases & Idioms
Keep Your Cards Close to Your Chest
To keep your cards close to your chest is to keep your plans or intentions secret. The metaphor is transparently connected with concealing a hand of playing cards, but exact dating is uncertain. The reviewed history source explicitly warns that popular 1860s-origin claims lack citations and treats mid-twentieth-century figurative evidence as the safer documentary floor.
Phrases & Idioms
Let the Cat Out of the Bag
To let the cat out of the bag is to reveal a secret, often unintentionally. Phrase Finder and Word Histories both document a 1760 London Magazine use. Popular market-swindle and cat-o’-nine-tails explanations are kept separate from that secure chronology because the reviewed evidence does not directly establish either as the phrase’s origin.
Phrases & Idioms
Open Secret
An “open secret” is something officially or supposedly secret that many people already know.
Phrases & Idioms
Pull the Strings
“Pull the strings” means to exercise control, often indirectly or secretly behind the scenes. It is distinct from “pull strings,” which can mean using influence to obtain help or an advantage.
Phrases & Idioms
Put Your Cards on the Table
“Put Your Cards on the Table” means to be honest and open about your feelings, intentions, or position. This guide focuses on current documented usage and does not assert unsupported origin chronology.
Phrases & Idioms
Skeleton in the Closet
“A skeleton in the closet” means an embarrassing or damaging secret that someone wants to keep hidden. The expression is securely associated with early nineteenth-century print, but reviewed historical sources disagree over whether the key wording should be attributed to an 1815 work by Joseph Adams or to its 1816 appearance in The Eclectic Review.
Phrases & Idioms
Smoking Gun
A “smoking gun” is decisive evidence or information that establishes responsibility or culpability for an act. Use it when the evidence is presented as strongly establishing responsibility; ordinary clues or weak suspicion do not automatically amount to a smoking gun.
Phrases & Idioms
Tip of the Iceberg
“Tip of the Iceberg” means a small visible or known part of something much larger, often a problem. This guide focuses on current documented usage and does not assert unsupported origin chronology.
Phrases & Idioms
Trojan Horse
A “Trojan horse” is something that appears acceptable or helpful but gains entry in order to undermine a group or system from inside. The phrase can be figurative or technical (malware); keep the intended sense clear and avoid implying secret malicious intent when the evidence only shows an ordinary unwanted consequence.
Phrases & Idioms
Under the Radar
“Under the radar” means attracting little notice, attention, or detection. Context determines whether that low visibility is deliberate or simply the result of being overlooked.
Phrases & Idioms
Under Your Nose
“Under your nose” can describe something in an obvious nearby place and can also emphasize that something happened openly without being noticed or prevented. This guide keeps those current senses separate from origin speculation.