IPA: /ɪnˈhɒspɪtəbl/
KK: /ɪnˈhɑːspɪtəbl/
Not welcoming or friendly; a place that is difficult for people or living things to survive in.
The inhospitable climate made it hard for any plants to grow.
Inhospitable is formed from "in-" (meaning not) and "hospitabilis" (from Latin, meaning hospitable or welcoming). The word describes a place that is not welcoming or friendly to visitors.
Think of 'not welcoming' ('in-') and 'hospitable' — that's why inhospitable means a place that is unwelcoming.