Simple Examples:
* She nonchalantly flipped through the magazine, pretending to be uninterested.
* He nonchalantly shrugged his shoulders, acting as if he didn't care.
More Complex Examples:
* Despite the chaos unfolding around him, he nonchalantly sipped his coffee, his expression unreadable.
* She walked into the room nonchalantly, as if she hadn't just won a million dollars.
* He nonchalantly tossed the crumpled paper ball into the trash can, as if it were a routine action.
With Different Connotations:
* Nonchalantly, she picked up the phone, her voice a casual facade hiding her nervousness.
* His nonchalant demeanor masked the turmoil raging within him.
* The detective nonchalantly surveyed the crime scene, his eyes missing nothing.
Remember: "Nonchalantly" suggests a casual, indifferent, or unconcerned manner. It's often used to describe actions that are performed without effort or fuss, even if the person is feeling something else inside.