undetected
1 of 1adjective/ˌʌndɪˈtɛktɪd/
1
not discovered, noticed, or detected, often referring to something that was searched or looked for
- The error remained undetected until the final check.
- His illness went undetected for years.
- She managed to sneak into the house undetected.
- His actions were undetected by the authorities.
- The flaws in the design were undetected by the engineers.
Antonyms: