I can sense that you have an ulterior motive of some sort, she explained.
Do you wonder if every person who thinks your baby is cute has a sinister ulterior motive?
Darkyn was always right; the sense he gave her to gauge when someone around her had an ulterior motive was tingling.
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.
Could Tony have had an ulterior motive - to allow the Tories time to gather strength to take on Gordon?