Noun undoing has 2 senses
  1. undoing - an act that makes a previous act of no effect (as if not done)
    --1 is a kind of
    about-face, volte-face, reversal, policy change
    Derived form: verb undo1
  2. untying, undoing, unfastening - loosening the ties that fasten something; "the tying of bow ties is an art; the untying is easy"
    --2 is a kind of loosening, laxation
    Derived form: verb undo4
,Verb undo has 5 senses
  1. undo - cancel, annul, or reverse an action or its effect; "I wish I could undo my actions"
    --1 is one way to
    change by reversal, turn, reverse
    Derived form: noun undoing1
    Sample sentences:
    Somebody ----s something
    Something ----s something
  2. unmake, undo - deprive of certain characteristics
    Sample sentence:
    Somebody ----s something
  3. undo - cause the ruin or downfall of; "A single mistake undid the President and he had to resign"
    --3 is one way to
    ruin
    Derived forms: noun undoer3, noun undoer1
    Sample sentences:
    Somebody ----s somebody
    Something ----s somebody
  4. untie, undo, loosen - cause to become loose; "undo the shoelace"; "untie the knot"; "loosen the necktie"
    --4 is one way to change, alter, modify
    Derived forms: noun undoer2, noun undoing2
    Sample sentence:
    Somebody ----s something
  5. unwrap, undo - remove the outer cover or wrapping of; "Let's unwrap the gifts!"; "undo the parcel"
    --5 is one way to uncover, expose
    Derived form: noun undoer2
    Sample sentence:
    Somebody ----s something
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