Difference between Impossible and Undoable

IMPOSSIBLE vs UNDOABLE: NOUN

Not capable of occurring or being accomplished or dealt with
Used of persons or their behavior
Incapable of having existence or of occurring.
Not capable of being accomplished.
Unacceptable; intolerable.
Extremely difficult to deal with or tolerate.
Not possible; incapable of being done, of existing, etc.; unattainable in the nature of things, or by means at command; insuperably difficult under the circumstances; absurd or impracticable; not feasible.
An imaginary quantity. See Imaginary.
Not possible, not able to be done.
Very difficult to deal with.
Totally unlikely

(used of persons or their behavior) not acceptable or reasonable
Not possible; non-existent or false by necessity.
In law, in a stricter sense, prevented only by the act of God or a public enemy.
Excessively odd; not to have been imagined; such as would not have been thought possible: as, she is a most impossible person; he wears an impossible hat.

Insufferable, Unrealizable, Impracticable, Unacceptable, Hopeless, Intolerable, Unworkable, Unimaginable, Unattainable, Unachievable, Unthinkable, Infeasible, Undoable, Unfeasible, Inconceivable

Insufferable, Unrealizable, Impracticable, Unacceptable, Hopeless, Intolerable, Unworkable, Unimaginable, Unattainable, Unachievable, Unthinkable, Infeasible, Undoable, Unfeasible, Inconceivable

They may manipulate employees by setting impossible goals.
And now she must make an impossible choice.
SURREY CHAIRMAN The journey was at times impossible.
Without precise figures, it is impossible to estimate.
It is practically impossible to implement programs independently.
Bathroom door opens in, making wheelchair access impossible.
Therefore living in the UK would be impossible.
It would be impossible fairly to do so.
An important feature: timers that trigger on a certain time are impossible in contracts impossible timers.
Everyone said impossible, they all said it was impossible to get done.

The excuse that this is undoable for the Service Organizationis becoming less valid, but is still a reality.
This allows you to sleep well at night, knowing that nothing is undoable and no huge mistakes can occur.
But while violence, even widespread violence, seems possible, a true military coup looks undoable.
It has also provided guidance alleviating clinical requirements for several other drugs previously considered 'undoable' (Asacol, Lialda, Restasis).".
Earning their own coupons tell future to undoable to hazard the forced.
If design changes are not forbidden by apartment management, it is utterly undoable because of limited space.
Perhaps he should have quit, if he sensed it was undoable.
Retain maximum flexibility: avoid undoable actions when dealing with customary systems unless necessary and justified.
What seems impossible or undoable now may, in fact, turn into a future plan.
Making these type of calculations by hand is undoable.