冬|ふゆfuyu[2]odaka (tail-high)

1. noun, adverbwinter
   まもなく冬ふゆだ。↗

   It will be winter before long.

• SynonymウィンターNeutralLoanword, mostly in compounds such as 「ウィンタースポーツ」 and 「ウィンターセール」; rarely used on its own.
• Synonym冬期とうきWrittenWritten/formal prose term for the winter period, typical of business and official rules: 「冬期休業」, 「冬期講習」.
• Synonym冬季とうきWrittenWritten/formal prose term for the winter season, typical of weather and sports contexts: 「冬季オリンピック」.
• Antonym夏なつNeutralThe opposite of 「冬」: the hottest of the four seasons.

Default to 「冬」 in everyday speech. Use 「冬期」 for business periods like 「冬期休業」, 「冬季」 when naming the season as in 「冬季オリンピック」, and 「ウィンター」 mainly in compounds. 「夏」 is its opposite.

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

1. 季節きせつ（四季しき）の一ひとつ。秋あきの次つぎ、春はるの前まえ。