From Longman Dictionary of Contemporary Englishcinchcinch1 /sɪntʃ/ noun [singular] informal1EASYsomething that is very easy‘How was the exam?’ ‘Oh, it was a cinch!’be a cinch to do somethingThe program is a cinch to install.2CERTAINLY/DEFINITELY American English something that will definitely happen, or someone who will definitely do somethingbe a cinch to do somethingMost observers say the president is a cinch to win re-election.
Examples from the Corpus
cinch• I doubted that the load could be lifted, but Leese said it would be a cinch.• Edith finds the cooking a cinch.• There was no manual with the beta version, but the package as a whole is a cinch to use.• He used the third to make a cinch between her hands and the chair's bottomrail.• After that, he was on his own, but the thousand dollars was a cinch.• Today Astrid wore a whitesatinydress with a widegoldcinchbelt.• Making an ocean is no cinch.be a cinch to do something• Good piecrustis a cinch to make.• The L.A. Dodgersare a cinch towin the division.• Equally important, the battle. netsiteis a cinch to get to.• There was no manual with the beta version, but the package as a whole is a cinch to use.be a cinch to do something• Equally important, the battle. net site is a cinch to get to.• There was no manual with the beta version, but the package as a whole is a cinch to use.cinchcinch2 verb [transitive]1DCto pull a belt, strap etc tightly around somethinga blue dress cinched at the waist by a wide belt2CERTAINLY/DEFINITELY American English to make something certain to happenThey cinched a place in the play-off.→ See Verb table