undetected
un·de·tec·ted
adjective
1.
not perceived or discerned
- “they feared some undetected trace of poison”
- “she looked around to be sure her faux pas was undetected”
Origin
From un- + detected.
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.