undoers
People who reverse
Undoers are people or things that undo—that reverse, unravel, or bring to ruin.
Someone who loosens knots is an undoer in the literal sense.
More often the word appears figuratively: Pride and impatience were his undoers.
The term is uncommon, with "undoing" (as in his undoing) far more frequent than the agent noun.
Things that undo
- annullersThose who cancel officially
- revokersThose who annul
- invalidatorsThose who void
- negatorsThose who nullify
nullifiers · repeaters · cancellers · retractors · abolishers · overturners · backtracking · unwinding
Fast armed naval vessels
- wreckersThose who dismantle structures
- demolishersThose who destroy structures
- dismantlersThose who take apart
- saboteursIntentional disruptors of operations
ruiners · annihilators · obliterators · ravagers · defeaters · breakers · unravelers · destabilizers
Those who restore function
- correctorsThose who fix errors
- rectifiersAC-to-DC converters
- amendersThose who modify texts
- revisersThose who amend texts
reformers · editors · improvers · adjusters · menders · restorers · healers · troubleshooters
reversers
Things that undo
- annullersThose who cancel officially
- revokersThose who annul
- invalidatorsThose who void
negators · nullifiers · repeaters · cancellers · retractors · abolishers · overturners · backtracking · unwinding · rollback
destroyers
Fast armed naval vessels
- wreckersThose who dismantle structures
- demolishersThose who destroy structures
- dismantlersThose who take apart
saboteurs · ruiners · annihilators · obliterators · ravagers · defeaters · breakers · unravelers · destabilizers · disruptors
fixers
Those who restore function
- correctorsThose who fix errors
- rectifiersAC-to-DC converters
- amendersThose who modify texts
revisers · reformers · editors · improvers · adjusters · menders · restorers · healers · troubleshooters · debuggers
undoerscompleters
Those who finish tasks
finishers · accomplishers · achievers · fulfillers · executors
undoersbuilders
Those who construct things
creators · makers · constructors · architects · establishers
undoerspreservers
Things that maintain condition
maintainers · keepers · sustainers · upholders · protectors