Note for programmers: "undoable" is something that can't be done, not something that you can undo.
Из сушёных грибов сиитакэ,
в джазе только телочки,
Starepolsky smok,
луну придётся засолить,
радио морских снегоходов,
вкус ароматизатора,
Pavel Kaplin,
sёliv,
kirillk,
ftt,
I'm on my way,
and
абизьян
liked this
and what's the correct answer?
- Pavel Kaplin
"The prefix un means not, reverse action, deprive of, release from" (http://www.ecenglish.com/learnen...). So it's really something you can undo. What can't be done could be called non-doable, im- or dis- could perhaps be used but nobody says so.
- Peter Gromov
what's wrong with good old "impossible", anyway?
- Evelynne