Antonyms of adj untapped

2 senses of untapped

Sense 1
untapped (vs. tapped) -- (not subjected to tapping; "an untapped keg"; "an untapped sugar maple")

tapped (vs. untapped) -- (in a condition for letting out liquid drawn out as by piercing or drawing a plug; "latex from tapped rubber trees")
        => abroach, broached -- (of a cask or barrel; "the cask was set abroach")

Sense 2
untapped -- (not drawn upon or used; "untapped reserves of coal"; "the untapped stockrooms of our minds"- G.R.Harrison)

INDIRECT (VIA unexploited) -> exploited -- (developed or used to greatest advantage)

Similarity of adj untapped

2 senses of untapped

Sense 1
untapped (vs. tapped) -- (not subjected to tapping; "an untapped keg"; "an untapped sugar maple")

Sense 2
untapped -- (not drawn upon or used; "untapped reserves of coal"; "the untapped stockrooms of our minds"- G.R.Harrison)
       => unexploited (vs. exploited), undeveloped -- (undeveloped or unused; "vast unexploited (or undeveloped) natural resources"; "taxes on undeveloped lots are low")