We don't have synonyms for decimator yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are decimate, decimeter and decorator.
°To kill one man chosen by lot out of every ten in a legion or other military group.
"ca. 1650: Jeremy Taylor, (from vol. 1 of an 1835 edition of his works) - God sometimes decimates or tithes delinquent persons, and they died for a common crime, according as God hath cast their lot in the decrees of predestination."
°To reduce anything by one in ten, or ten percent.
°To kill one man chosen by lot out of every ten in a legion or other military group.
"ca. 1650: Jeremy Taylor, (from vol. 1 of an 1835 edition of his works) - God sometimes decimates or tithes delinquent persons, and they died for a common crime, according as God hath cast their lot in the decrees of predestination."
°To reduce anything by one in ten, or ten percent.