Green’s Dictionary of Slang

an opinion, a viewpoint.

1738		Swift Polite Conversation 9: O, Miss, you must give your Vardi too.
1788, 1796		Grose Classical Dict. of the Vulgar Tongue (2nd, 3rd edn) n.p.: To give one’s vardy; i.e. verdict or opinion.
1811		Lex. Balatronicum [as cit. 1788].
1823		Egan Grose’s Classical Dict. of the Vulgar Tongue.
1859		Matsell Vocabulum.
1864, 1867, 1870		Hotten Sl. Dict.
1873		Sl. Dict.
1895		Crowe Aus. Sl. Dict. 92: Vardy, an opinion; as ‘my vardy is the same as yours’.