English Etymology From caution + -er. Noun cautioner (plural cautioners) A person who cautions. (Scotland) A surety. 1693, James Dalrymple Stair, The institutions of the law of Scotland, page 755:Fourteen Days are only allowed for Sists of Execution, from the Date the Bill was signed, for the Clerks inquiring in the Condition of the Cautioner […] Anagrams auctioner, cointreau, autocrine, Cointreau, anticoeur, re-auction, reauctionRemove adsWikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads