Other forms: gauntly; gaunter; gauntest
The word gaunt means extremely bony or thin, often from weariness, suffering, or hunger. A place that is described as gaunt may look deserted, harsh, or just very plain.
A stark, desolate landscape may be described as gaunt: harsh, barren, seemingly lifeless. If a group of hikers get lost for weeks in such a wilderness, surviving with little food or warmth, they would likely start to look gaunt: haggard, perhaps a bit skeletal. When they spy a gaunt old fortress on a hilltop, they'd probably ignore the fact that it looks abandoned, gloomy, even forbidding, and knock on the door to seek help. Don't worry — the gaunt-faced woman inside the mansion turns out to be a lovely person, who offers warmth and refuge.