Adjective
not perceived or discerned
Source: WordNetthey feared some undetected trace of poison Source: Internet
she looked around to be sure her faux pas was undetected Source: Internet
An aircraft having stealth characteristics would be able to fly nearly undetected and could be attacked only by weapons and systems not relying on radar. Source: Internet
Also, it may lead to the inadvertent termination of an undetected intrauterine pregnancy, or severe abnormality in any surviving pregnancy. Source: Internet
Again, this assumption is challengeable with, for instance, stealth aircraft, but also with other means, such as smuggling weapons to the target undetected (using devices like a suitcase nuke ). Source: Internet
“A submarine’s best defense is of course stealth, remaining quiet and undetected in the ocean deep,” Ballantyne notes. Source: Internet