Warily
/ˈwerəli/
Definition 1 of 1
Pro Tip 1/3Trust Issues
Used when there is a lack of trust or when feeling suspicious about someone's motives or honesty. 
He eyed the contract warily, not trusting the fine print.
Pro Tip 2/3Potential Danger
Reflects that there is a potential risk or danger involved in a situation. 
She entered the abandoned house warily, knowing it could be unsafe.
Pro Tip 3/3Subtle Body Language
Often used to describe body language that shows hesitation or unease. 
He approached the stray dog warily, afraid it might bite.