southwestern
US: /ˌsaʊθˈwɛstɝn/
UK: /saʊθwˈɛstən/
Concise dictionary
‚saʊθ'westə(r)nnoun
+a dialect of Middle English
adj.
+situated in or oriented toward the southwest
+of a region of the United States generally including New Mexico; Arizona; Texas; California; and sometimes Nevada; Utah; Colorado