undoer

un·do

U0064800 (ŭn-do͞o′)v. un·did (-dĭd′), un·done (-dŭn′), un·do·ing (-do͞o′ĭng), un·does (-dŭz′) v.tr.1. To reverse or erase; annul: impossible to undo the suffering caused by the war.2. To untie, disassemble, or loosen: undo a shoelace.3. To open (a parcel, for example); unwrap.4. a. To cause the ruin or downfall of; destroy.b. To throw into confusion; unsettle.v.intr. To come open or unfastened.

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un·do′er n.

Thesaurus

Noun	1.	undoer - a seducer who ruins a woman; "she awoke in the arms of her cruel undoer"ladies' man, lady killer, seducer - a man who takes advantage of women
	2.	undoer - a person who unfastens or unwraps or opens; "children are talented undoers of their shoelaces"unfastener, untier, openerindividual, mortal, person, somebody, someone, soul - a human being; "there was too much for one person to do"
	3.	undoer - a person who destroys or ruins or lays waste to; "a destroyer of the environment"; "jealousy was his undoer"; "uprooters of gravestones"ruiner, uprooter, waster, destroyerannihilator - a total destroyerbad person - a person who does harm to othersiconoclast, image breaker - a destroyer of images used in religious worshipdiversionist, saboteur, wrecker - someone who commits sabotage or deliberately causes wrecksvandal - someone who willfully destroys or defaces property