Suspectedly

The cashier eyed the customer suspectedly when he tried to pay with a counterfeit bill.

The cashier eyed the suspicious customer suspectedly as he paid with a large amount of cash.

He glanced around suspectedly, as if expecting someone to follow him.

The shopkeeper studied the customer suspectedly, concerned about potential shoplifting.

He glanced around suspectedly, as if he had something to hide.

She glanced at her friend suspectedly, unsure if she could trust her with the secret.

The boss raised an eyebrow suspectedly when the employee arrived late for the third time that week.

She glanced at her friend's suspicious behavior suspectedly, wondering if something was wrong.

He glanced around suspectedly, unsure if he was being followed.