· an act that makes a previous act of no effect (as if not done)

Hypernym(s): about-face, volte-face, reversal, policy_change

· loosening the ties that fasten something; "the tying of bow ties is an art; the untying is easy"

Synonym(s): untying, unfastening

Hypernym(s): loosening, laxation

· cancel, annul, or reverse an action or its effect; "I wish I could undo my actions"

Hypernym(s): change_by_reversal, turn, reverse

· deprive of certain characteristics

Synonym(s): unmake

· cause the ruin or downfall of; "A single mistake undid the President and he had to resign"

Hypernym(s): ruin

· cause to become loose; "undo the shoelace"; "untie the knot"; "loosen the necktie"

Synonym(s): untie, loosen

Hypernym(s): change, alter, modify

· remove the outer cover or wrapping of; "Let's unwrap the gifts!"; "undo the parcel"

Synonym(s): unwrap

Hypernym(s): uncover, expose