Very difficult to predict. Erratic or unstable, fickle.
"I'd rather go out with someone a little more unpredictable."

Is that what anyone would want in a spouse or a sweetheart? Somebody who is inconsistent, flaky, fickle, erratic, and just unreliable? A bad boy would be just the wrong man to marry if you want a successful, stable marriage.
by Lorelili August 11, 2011
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