undevelop

== English == === Etymology === From un- +‎ develop. === Verb === undevelop (third-person singular simple present undevelops, present participle undeveloping, simple past and past participle undeveloped) (transitive) To undo the development of. 2006, Katherine Fischer, Dreaming the Mississippi (page 197) […] to undevelop the land, and to return floodplains to the river.