* Formal: Despite the chaotic scene around him, the CEO maintained an unruffled brow, calmly addressing the press.
* Descriptive: Her unruffled brow and steady gaze conveyed a calmness that belied the storm brewing within.
* Figurative: The detective, with an unruffled brow, examined the crime scene, piecing together the clues like a puzzle.
* Contrasting: His unruffled brow was a stark contrast to the frantic energy of the crowd.
Let me know if you'd like more examples or have a specific scenario in mind!