Ulterior motive

a motive, object or aim beyond that which is avowed.

See also: Ulterior

References in classic literature ?
The old Chinaman was positive that the pirates had some ulterior motive for simulating defeat, and his long years of experience upon pirate infested waters gave weight to his opinion.
This man acted as interpreter, and almost from the first question that M'ganwazam put to her, Jane felt an intuitive conviction that the savage was attempting to draw information from her for some ulterior motive.
The little princess, like an old war horse that hears the trumpet, unconsciously and quite forgetting her condition, prepared for the familiar gallop of coquetry, without any ulterior motive or any struggle, but with naive and lighthearted gaiety.
There are moments when the inner life actually "pays," when years of self-scrutiny, conducted for no ulterior motive, are suddenly of practical use.
There was no telling when the god's ulterior motive might be disclosed.
Secondly, my conscience is perfectly easy; I make the offer with no ulterior motive.
A man whose views are so broad and moderate, and so widely held already (saving your presence, Bunny), does not bore the world with them without ulterior motives.
Summary: New York [USA], Jan 19 (ANI): Apple CEO Tim Cook on Friday said that Apple Inc did not have any ulterior motive iPhones with older batteries, claiming that all batteries age over time.
They have published misleading advertisements for the appointments of BPS-17 and above with ulterior motive.
I've spoken to a few actresses I've had to kiss over the years, and they all say the same thing: Because I'm gay, there's no part of their brain that thinks I might have an ulterior motive.
The employers' ulterior motive is of course quite obvious: to reduce their monthly SSS premium cost exposure.
He was not standing for parliament and had no ulterior motive.