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History of the phrase; Prior to electronic counter measures, military aircraft would fly beneath the Radio Detection and Ranging (RADAR) in order not to be detected by enemy forces. This term started out as a military phrase in the 1950's. Pop-Culture definition; generally an insult or can be used as advice. 1. To not stand-out, to remain quite. 2. To not drawn any attention to yourself either positively or negatively. By not standing out or gaining any positive or negative attention, the person 'flying under the radar' 3. To go undetected.
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