antedating of "off-kilter" 1929
SClements at NEO.RR.COM
Sun Feb 1 06:05:28 UTC 2004
M-W has 1944. OED doesn't have, but cites "out of kilter" well before this.
12 Feb. 1929 Frederick(MD) Post 4/5
<<There is a definite depression about them that one knows instinctively will be continued upon entering. One knows instinctively that there will be a battered, scruffed bit of rug running up the stairway; that the stairs will be a bit off-kilter; ....>>
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