If you say that something is a cinch, you mean that you think it is very easy to do.
[informal]
It sounds difficult, but compared to full-time work it was a cinch.
cinch in British English1
(sɪntʃ)
noun
1. slang
an easy task
2. slang
a certainty
3. US and Canadian
a band around a horse's belly to keep the saddle in position
Also called (in Britain and certain other countries): girth
4. informal
a firm grip
verb
5. (often foll by up) US and Canadian
to fasten a girth around (a horse)
6. (transitive) informal
to make sure of
7. (transitive) informal
to get a firm grip on
Word origin
C19: from Spanish cincha saddle girth, from Latin cingula girdle, from cingere to encircle
cinch in British English2
(sɪntʃ)
noun
a card game in which the five of trumps ranks highest
Word origin
C19: probably from cinch1
cinch in American English
(sɪntʃ)
US
noun
1.
a saddle or pack girth
2. Informal
a firm grip
3. Slang
a thing easy to do or sure to happen
verb transitive
4.
to fasten (a saddle) on (a horse, burro, etc.) with a cinch
5.
to bind firmly
6. Slang
a.
to get a firm hold on
b.
to make sure of
Word origin
MexSp < Sp cincha < L cingulum, a girdle < cingere, to surround, encircle < IE base *kenk-, to gird, encircle > Sans káñcate, (he) binds, Gr kakala, walls
Examples of 'cinch' in a sentence
cinch
`Sure," Bob said, his throat somewhat dry, `It'll be a cinch.
Arthur, Robert THREE IN ONE (2002)
At one point I pulled her in completely and dismounted on the pretext of tightening a cinch.
Robin Hobb THE GOLDEN FOOL: BOOK TWO OF THE TAWNY MAN (2002)
`With two more steps to go before we can cinch the case against Gino, if he is mixed up in this.
Gagman, Maurice DOUBTFUL MOTIVES (2002)
Leather snapped against leather as Reno tied off the mare's cinch with smooth, strong motions.