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to slip under the radar

to slip under the radar

1 6.3
To go unnoticed by people or officials
  • phrasal verb
  • Informal
translation icon : pasar desapercibido
  • While preparing the report, some minor errors slipped under the radar and went unnoticed.

And so a lot of stuff slips under the radar that way.

Examples

  • While their straight friends and siblings can hope to fall in love and have their most important partnerships lifted up, celebrated, and supported by the community, the best that sexual minorities can hope for is to slip under the radar, unnoticed by those who would call their loving partnerships an abomination.

    Academic text (2011)
  • That commission was meant to slip under the radar to some extent.

    Blog text (4)
  • The ability to slip under the radar is not one of them.

    Blog text (10)
  • And so a lot of stuff slips under the radar that way.

  • Maybe you did, but since I can't tell Eve from Abbey from Pauline, it probably slipped under the radar.

    Blog text (24)
  • In principle, of course they should be, but the reality will be that they are hostage to day-to-day operational pressures where, all too easily, an absent employee can slip under the radar.

    Academic text (2014)
  • Surely, though, you as an editor should be quite familiar with those mistakes, either yours or others, that slip under the radar because you've viewed the exact same thing so many times that a little thing like a repeated letter just doesn't merit your attention anymore.

    Blog text (2)
  • I am actually quite surprised at how many of her (and others') comments slip under the radar of the moderation policy on this website, which strictly forbids blatant inflammatory attacks against other posters.

    Blog text (10)
  • Many talented artists slip under the radar and never get the recognition they deserve.

  • Several important details can easily slip under the radar during long meetings.

Synonyms

to slip through
vsto slip under the radar
  • Informal
58 4.2

Pass through something so it is not noticed or stopped

focuses on avoiding notice rather than simply passing quickly
to keep a low profile
vsto slip under the radar
36 3.9

Act quietly so people do not notice you

is broader and can happen without deliberate effort
to lie low
vsto slip under the radar
  • Informal
14 5.6

To stay out of sight to avoid trouble

can be unintentional rather than hiding for safety
to slip by
vsto slip under the radar
11 3.8

To go past quickly without anyone noticing, as with time or chances

covers unnoticed presence generally, not only fast passing moments
to fly under the radar
vsto slip under the radar
  • Informal
9 5.9

To avoid being noticed by other people

is the general way to go unnoticed or undetected
to fall between the cracks
vsto slip under the radar
  • Informal
2 7.4

Not get noticed or dealt with

is about avoiding notice, not about being missed by systems
to drop off the radar
vsto slip under the radar
  • Informal
1 7.5

To stop being seen or heard from by others

describes going unnoticed at any time, not only after prior visibility
to fall off someone's radar
vsto slip under the radar
7.4

To stop being noticed or thought about by someone

is more general, not specific to one person's attention

Antonyms

To make people notice something or someone

How Noticeable

to blend in
20 3.7
to slip under the radar
  • Informal
1 6.3

Surface Forms

slipped under the radar past participle
slipping under the radar present participle
slips under the radar third person singular

Morphology

slip + under + the + radar

The phrase combines literal senses — 'slip' (move quietly/secretly), 'under' (below), and 'radar' (a detection system) — to create a clear metaphorical image of moving below detection. A B1 learner who knows the constituent words can readily infer 'to go unnoticed or undetected' without prior exposure, so the expression is compositionally transparent.

Etymology

The phrase slip under the radar comes from the image of something that slips under a ship or plane's radar, so the radar does not see it. That's why today it means 'to go unnoticed' or 'to avoid attention'.