1
: lying toward or coming from the southwest
2
often Southwestern : of, relating to, or characteristic of a region conventionally designated Southwest

Examples of southwestern in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
In Iran’s southwestern Khuzestan province, at least three people were killed Thursday, state media reported. Jon Gambrell, Los Angeles Times, 9 July 2026 The debris was recovered about 100 kilometers (60 miles) off Ormara, a coastal town on Pakistan’s southwestern Makran coast in Balochistan province. ABC News, 9 July 2026 Elsewhere in South Korea, SK Hynix is expanding its production facilities in Cheongju, and developing a new cluster of fabs in the southwestern region of the country. Kif Leswing,katie Tarasov, CNBC, 9 July 2026 Animal health experts say pet owners in areas where the screwworm is present — southern and southwestern Texas and southeastern New Mexico so far — should watch their animals closely and examine them for wounds, cuts and bites regularly. John Hanna, Fortune, 8 July 2026 See All Example Sentences for southwestern

Word History

Etymology

Middle English, from Old English sūth-westerne, from sūth south + westerne western

First Known Use

before the 12th century, in the meaning defined at sense 1

Time Traveler
The first known use of southwestern was before the 12th century

Cite this Entry

“Southwestern.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/southwestern. Accessed 12 Jul. 2026.

Kids Definition

southwestern

adjective
1
: lying toward or coming from the southwest
2
often capitalized : of, relating to, or characteristic of the Southwest

More from Merriam-Webster on southwestern

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster