The question of how to express my username, Undo, in Latin recently came up in chat. As Ben Kovitz notes, Latin seems to lack the word 'defacio' or similar.
How can I say my name, the verb "undo", in Latin?
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You could use retexo, literally "unweave, unravel", but also used to mean the below:
B. Trop., to break up, cancel, annul, reverse
It depends a little bit on the context, though, what the best translation would be. Other candidates are restituo, resolvo, abrogo, rescindo, induco, evacuo, exinanio, eludo, libero...
Adjectives with a similar meaning include infectus, irritus...