sneaking
adjective C2- Secret or underhand; not openly avowed.
From the library
When the police is at fault, it declares that it is on the track; and the government patiently awaits the day when it comes to say, with a sneaking air, that the track is lost.”
Marilla had a sneaking interest in politics herself, and as she thought it might be her only chance to see a real live Premier, she promptly took it, leaving Anne and Matthew to keep house until her return the following day.
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