(ש"ע) חיסול, הרס

(פ') להתיר, לפתוח; לבטל; לקלקל; לחסל

n. reversing, revoking; act of opening (a jacket, package, door, etc.), releasing or unloosing (e.g. of a knot in a rope); destruction, ruin

v. open (a jacket, package, door, etc.), release, unloose; cancel, revoke, reverse, annul; bring to ruin (emotionally, morally, etc.)

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Noun
1. an act that makes a previous act of no effect (as if not done)
(hypernym) about-face, volte-face, reversal, policy change
(derivation) undo
2. loosening the ties that fasten something; "the tying of bow ties is an art; the untying is easy"
(synonym) untying, unfastening
(hypernym) loosening, laxation
(derivation) untie, undo, loosen

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Verb
1. cancel, annul, or reverse an action or its effect; "I wish I could undo my actions"
(hypernym) change by reversal, turn, reverse
(hyponym) untie, unbrace, unlace
(derivation) undoing
2. deprive of certain characteristics
(synonym) unmake
(hyponym) destroy, destruct
3. cause the ruin or downfall of; "A single mistake undid the President and he had to resign"
(hypernym) ruin
(derivation) destroyer, ruiner, undoer, waster, uprooter
4. cause to become loose; "undo the shoelace"; "untie the knot"; "loosen the necktie"
(synonym) untie, loosen
(hypernym) change, alter, modify
(derivation) undoer, opener, unfastener, untier
5. remove the outer cover or wrapping of; "Let's unwrap the gifts!"; "undo the parcel"
(synonym) unwrap
(hypernym) uncover, expose
(derivation) undoer, opener, unfastener, untier

Czas. rozwiązywać; rozpinać; naprawiać; unieważniać

(n.)
The reversal of what has been done.
  

(n.)
Ruin.