Conspiratorial

The conspiratorial comments made by the reporters led to speculation about corruption in the company.

The email had a conspiratorial tone, suggesting that the sender knew something others didn't.

The speaker hinted at a conspiratorial link between the government and the pharmaceutical industry.

The group of friends shared a conspiratorial glance before revealing their surprise for the birthday girl.

The conspiratorial nature of the email made me think it was a scam.

The stranger's conspiratorial behavior made the passengers uneasy on the train.