The Oxford Thesaurus An A-Z Dictionary of Synonyms - inhospitableadj.

1) unwelcoming, unreceptive, uninviting, unsociable, unsocial, aloof, cold, cool, standoffish, unfriendly, inimical, antisocial, hostile, xenophobic: They were most inhospitable and refused to let me in. 2) unfavourable, forbidding, hostile, barren, desert, uninviting, uninhabitable: They were marooned on an inhospitable reef in the middle of the Pacific.