南西|なんせいnansei[0]heiban (flat)

1. no-adjectivesouthwest

• Synonym西南せいなんNeutralSino-Japanese-style noun for southwest, leaning to written/formal prose, as in 「西南戦争」; in everyday speech 「南西」 is the usual word for the direction.
• Related未申ひつじさるWrittenLies between the zodiac directions 「未」 and 「申」, hence southwest; seen mostly in feng shui and classical texts, while 「坤」 comes from the eight trigrams.
• Antonym北東ほくとうNeutralNoun for the northeast direction, the opposite of 「南西」.

For the southwest direction Japanese normally uses 「南西」, as in 「南西の風」; 「西南」 is the Sino-Japanese-style, more written alternative, while the traditional terms 「未申」 and 「坤」 are old-fashioned. The opposite direction is 「北東」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 南みなみと西にしの中間ちゅうかんの方位ほうい。