* Despite the warnings of scientists, the warnings about climate change went unheeded for decades. (This sentence emphasizes the lack of attention to a serious issue.)
* The cries of the lost hikers went unheeded in the vast, echoing wilderness. (This sentence highlights the feeling of isolation and helplessness.)
* Her pleas for help were unheeded as the crowd surged forward, oblivious to her danger. (This sentence emphasizes the disregard for someone in need.)
* The old adage about procrastination was unheeded, leading to a last-minute scramble for deadlines. (This sentence uses "unheeded" to describe a lack of wisdom or foresight.)
* The subtle signs of illness were unheeded at first, only becoming alarmingly obvious when they worsened. (This sentence emphasizes the danger of ignoring early warning signs.)