Green’s Dictionary of Slang

1. averse to, hostile to.

1944		L. Glassop We Were the Rats 48: You oughtn’ter feel crooked on things.
1949		L. Glassop Lucky Palmer 87: That work [...] I’m crooked on that.
1959		D. Hewett Bobbin Up (1961) 49: Dawnie [...] don’t be crooked on your old Mum.
1960		J. Walker No Sunlight Singing (1966) 53: They had been told that the man in charge of the bore was ‘troppo’ and crooked on blacks and just as likely to shoot them as not.

2. (also crook on) angry with.

1944		L. Glassop We Were the Rats 5: I’m not crooked on ya no more.
1951		(con. 1941) E. Lambert Twenty Thousand Thieves 127: He’s crooked as hell on old Mum.
1963		(con. 1944) L. Glassop Rats in New Guinea 15: He’s crooked on the world, but he’s harmless.
1965		W. Dick Bunch of Ratbags 167: Some of the boys were a bit crook on Knuckles for calling them away and making them appear weak in front of the Aussies who had come out of their houses to watch.
1977		(con. 1941) R. Beilby Gunner 166: Perhaps he’s just crooked on all skulls. Can’t say I blame him the way things are now.
1989		R.G. Barrett Boys from Binjiwunyawunya 252: His darkening brown eyes moved balefully towards the sky. ‘You’re crooked on me, aren’t you. You always have been’.
1998		P. Doyle (con. late 1950s) Amaze Your Friends (2019) 115: ‘Some of the blokes here are crooked on people who hurt kids or steal from them’.