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undetectable Synonyms

Another word for undetectable

Choosing another word for undetectable that fits your sentence is easier when synonyms and similar words are paired with an exact adjective definition and ranked by match strength.
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• adjective (Context 1)

Not able to be discovered, perceived, or identified, especially because of being very slight, subtle, or concealed.

Usage Example

"The concentration of the mineral in the water sample was so low that it remained imperceptible by standard laboratory equipment."

Strongest
imperceptible
indiscernible
unnoticeable
Strong
unobservable
untraceable
invisible
inconspicuous
hidden
unseen

Opposites of undetectable

The opposite of undetectable shifts depending on context. Common opposites include:

detectable
perceptible
discernible
noticeable
observable
visible
obvious
apparent
See all opposites of undetectable

• Nearby Words

undesirably
undesired
undestroyed
undetectable
undetectably
undetected
undeterminable

Cite this Entry

Wordmom. (2026). Synonyms for Undetectable. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/synonyms/undetectable
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