1The company has been surreptitiously collecting user data without their consent, sparking a major controversy.
2She surreptitiously took a photo of the artwork to study it later, not wanting to draw attention to herself.
3The politician was accused of surreptitiously meeting with lobbyists to discuss the new bill, which many saw as a conflict of interest.
4The artist surreptitiously incorporated subtle messages into her paintings, which were only discovered by close observers.
5There is evidence to suggest that the company has been surreptitiously manipulating its financial records to avoid paying taxes.