Antonyms of adj undeveloped

2 senses of undeveloped

Sense 1
undeveloped (vs. developed) -- (not developed; "courses in interior design were rare and undeveloped"; "undeveloped social awareness")

developed (vs. undeveloped) -- (being changed over time so as to be e.g. stronger or more complete or more useful; "the developed qualities of the Hellenic outlook"; "they have very small limbs with only two fully developed toes on each")
        => formulated -- (devised; developed according to an orderly plan; "he had well formulated opinions on schooling")
        => mature, matured -- (fully considered and perfected; "mature plans")

Sense 2
unexploited (vs. exploited), undeveloped -- (undeveloped or unused; "vast unexploited (or undeveloped) natural resources"; "taxes on undeveloped lots are low")


Similarity of adj undeveloped

2 senses of undeveloped

Sense 1
undeveloped (vs. developed) -- (not developed; "courses in interior design were rare and undeveloped"; "undeveloped social awareness")
       => budding -- (beginning to develop; "a budding genius")
       => vestigial, rudimentary -- (not fully developed in mature animals; "rudimentary wings")

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