Antonyms of adj undetectable

2 senses of undetectable

Sense 1
undetectable -- (not easily seen)

INDIRECT (VIA invisible) -> visible, seeable -- (capable of being seen; or open to easy view; "a visible object"; "visible stars"; "mountains visible in the distance"; "a visible change of expression"; "visible files")

Sense 2
indiscernible, insensible, undetectable -- (barely able to be perceived; "the transition was almost indiscernible"; "an almost insensible change")

INDIRECT (VIA imperceptible) -> perceptible -- (capable of being perceived by the mind or senses; "a perceptible limp"; "easily perceptible sounds"; "perceptible changes in behavior")

Similarity of adj undetectable

2 senses of undetectable

Sense 1
undetectable -- (not easily seen)
       => invisible (vs. visible), unseeable -- (impossible or nearly impossible to see; imperceptible by the eye; "the invisible man"; "invisible rays"; "an invisible hinge"; "invisible mending")

Sense 2
indiscernible, insensible, undetectable -- (barely able to be perceived; "the transition was almost indiscernible"; "an almost insensible change")
       => imperceptible (vs. perceptible), unperceivable -- (impossible or difficult to perceive by the mind or senses; "an imperceptible drop in temperature"; "an imperceptible nod"; "color is unperceivable to the touch")

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