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undetectable
Derived word form of detect

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Now Sam takes daily medication to keep his viral load at an undetectable level, meaning it cannot be passed to anyone else.

From BBC • Apr. 23, 2026

Yet while the structure is designed to be undetectable from the inside, it’s a full-blown metallic colossus on the outside — visible from the surrounding L.A. freeways.

From Los Angeles Times • Apr. 13, 2026

This increased the signal-to-noise ratio by as much as 100-fold, making it possible to detect proteins that were previously undetectable.

From Science Daily • Mar. 25, 2026

Algorithms on popular platforms like Chess.com and Lichess.org will quickly catch players making excessive use of engines, but employing them selectively can give cheaters a decisive and likely undetectable advantage.

From Slate • Nov. 1, 2025

When the handkerchief was folded, the writing was undetectable.

From "Between Shades of Gray" by Ruta Sepetys