“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.
ReviewedEvidence1 sourceSectionPhrases & Idioms
Quick answer
“Under the radar” means largely unnoticed or receiving little attention.
Key details
Canonical Formunder the radar
Core Meaninglargely unnoticed, undetected, or receiving little attention
Further guidance
Contextual Examples
“The small release stayed under the radar until reviewers began recommending it.”
“The error went under the radar for weeks, but there is no evidence anyone deliberately hid it.”
History Boundary
The page publishes the current dictionary-supported meaning without claiming an exact inventor, coinage date, or absolute first use.
Meaning
largely unnoticed, undetected, or receiving little attention
Meaning Boundary
The phrase does not inherently mean secret, illegal, or intentionally hidden. Something can stay under the radar simply because few people notice it.
Practical Use
Use “under the radar” for something receiving little attention, notice, or detection. Add context if it matters whether the low visibility is deliberate or accidental.
Tone Boundary
It is common informal-to-neutral language. For precise reporting, specify “received little attention,” “was not detected,” or “was deliberately kept low-profile” as appropriate.
Usage Boundary
Do not assume secrecy or wrongdoing from the phrase alone; it can describe anything that has escaped notice.
Sources and evidence
Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.
“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.
“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.
“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.
“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.
“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.
“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.
“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.
“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.
