slips under the radar

Goes completely unnoticed

To slip under the radar is to go unnoticed or escape attention, especially when detection might be expected.

The image comes from aircraft flying low enough to avoid radar detection.

Something that slips under the radar avoids scrutiny—whether intentionally or by luck: The bill slipped under the radar and passed without debate.

Her early work slipped under the radar until she became famous.

Related

below the threshold · circumventing · imperceptible · understated · dodging · covert · bypassed · clandestine · off the grid · oblivious · inconspicuous · keeping a low profile · obscured · unacknowledged · escaping · low-profile · ignored · hidden

Opposites
visibility/detection

slips under the radarcomes to light

Becomes known or revealed

surfaces · stands out

attention/prominence

slips under the radargoes viral

Spreads rapidly online

makes waves · steals the show · stands out · sticks out like a sore thumb

intentionality of concealment vs. display

slips under the radarbroadcasts

Transmissions for public reception

advertises · shows off · trumpets

Family

slips, slipped, slipping, slipper, slippery, under, undergo, underlying, underlie

Familiarity
Top 20,000
Profile
Known to kids · Used worldwide · Timeless · Abstract · Everyday, not technical · Rated G