A man, indeed, is not genteel when he gets drunk; but most vicesmay be committed verygenteelly: a manmay debauch his friend's wife genteelly: he may cheat at cardsgenteelly.

-Boswell,James
  The Life of Samuel Johnson (1791), vol.2, entry for 6  Apr.

An'now, auld Cloots, I ken ye're thinkan, A certain Bardie's rantin, drinkin, Some luckless hour will send him linkan, To your black pit; But faith! he'll turn a corner jinkan, An'cheat you yet.

-Burns, Robert
  'Address to the Deil', stanza 20.

Thou shalt not steal; an empty feat, When it's so lucrative to cheat.

-Clough, Arthur Hugh
  The Latest Decalogue.

A face peered. All the grey night In chaos of vacancy shone; Nought but vast Sorrow was thereö The sweet cheat gone.

-de la Mare,Walter
  'The Ghost'.

In football it is widely acknowledged that if both sides agree to cheat, cheating is fair.

-Fry, C(harles) B(urgess)
  Quoted in Colin  Jarman The Guinness Dictionary of Sports Quotations (1990).

I hope I've done nothing so monosyllabic as to cheat. A spade is never so merelya spade as the word Spade would imply.

-Fry, C(harles) B(urgess)
  Venus Observed, act1.

To cheat a man isnothing; but the womanmust have fine parts indeed who cheats a woman!

-Gay,John
  The Beggar's Opera, act 2, sc.4.

Forlorn! the very word is like a bell To toll me back from thee to my sole self! Adieu! the fancy cannot cheat so well As she is famed to do, deceiving elf.

-Keats,John
  Lamia, Isabella, The Eve of St.  Agnes and Other Poems,'Ode to a Nightingale', stanza 8.

Honesty was a cheat invented first To bind the hands of bold deserving rogues, That fools and cowards might sit safe in power, And lord it uncontroll'd above their betters.

-Otway,Thomas
  Venice Preserved, or a Plot Discovered, act1, sc.1.