Green’s Dictionary of Slang

1. an ‘inevitable’ nickname for a Jew, esp. when surnamed Moss; a derog. name for a Jew; also adjectival use.

1896		Mirror of Life 30 May 15/1: [I]f you ask ‘Jewy’ Cooke his right name he will tell you, Abraham — the rest is unpronounceable.
1914		E. Pugh Cockney At Home 66: Martha had rather given ’Ria the pip through canoodlin’ wi’ Jewey Moss.
1922		Joyce Ulysses 281: Jesus, I had to laugh at the little jewy getting his shirt out.
1933		N. Lindsay Saturdee 170: He’s got a bit of a Jewey nose.
1984		Partridge DSUE (8th edn) 618: from ca. 1890.
2002		The Apollonian Press ‘American Israelis and Palestinians at Odds’ Country Joe’s Place 🌐 Goofy rhetoric from one Jew, Ben Nidovi, at a go-Israeli rally in New York. Said fellow Jewie Steven Kalifowitivdz: ‘Israel has never been an aggressor in this conflict; it has only over-reacted in typical pre-programmed, Hebrew, teeny-bopper manner to aggressions from the Towlies.’.

2. (Aus.) a Jew; generic for the Jewish people.

1904		Sydney Sportsman (Surry Hills, NSW) 1 June 3/3: ‘Don’t want nothink from you ; should take you to be a Jewey by yer talk,’ volunteered the marsupial shooter [...] ‘Vell, vat if I am; vats dat got ter do vit beeznis?’ said the Yiddy.
1904		Sydney Sportsman (Surry Hills, NSW) 21 Sept.8/6: Their sole object in life [...] was to take down the children of Israel [i.e. bookmakers]. But as of yore Jewey was too good for them.