Definition of "undoable"

undoable¹

adjective
comparative more undoable, superlative most undoable
1. Not doable; impossible to do.
noun
plural undoables
1. Something that cannot be done; an impossible or impractical task.

undoable²

adjective
comparative more undoable, superlative most undoable
1. Possible to undo; reversible.
  Quotations
  Many new functions and commands are undoable and a maximum of 30 commands are undoable and redoable.
  2003, Suzanne Sayegh Thomas, Using QuarkXPress 6.0, page 87