Unwelcoming or unfriendly to guests or visitors; harsh and difficult to live in or survive. Often used to describe both human behavior and environmental conditions like deserts or polar regions.
From Latin 'in-' (not) + 'hospitabilis' (hospitable), from 'hospes' (guest/host). The concept of hospitality was sacred in ancient cultures, making inhospitality a serious moral failing. The environmental sense developed as exploration revealed harsh, uninhabitable regions.
The ancient Greeks believed inhospitality was so offensive to the gods that Zeus himself was the protector of guests! Today's 'inhospitable environments' like Antarctica or deep ocean trenches are pushing the boundaries of where humans can survive, even with technology.
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