豪雨|ごううgouu[1]atamadaka (head-high)

1. nountorrential rain; heavy rain; cloudburst; downpour
   河川かせんは豪雨ごううで氾濫はんらんしました。↗

   The rivers were flooded by the heavy rain.

• Synonym大雨おおあめNeutralThe everyday word for heavy rain and the most common choice; 「豪雨」 leans toward weather reporting and suggests violent rain that may cause disaster.
• Synonym土砂降りどしゃぶりCasualA vivid colloquial word for a downpour, stressing how hard the rain falls; 「豪雨」 is weather-report style for rain that may cause disaster.
• Antonym小雨こさめNeutralLight rain; the opposite of 「豪雨」, which is violent, disaster-level rain.
• Antonym霧雨きりさめNeutralFine drizzle, the very opposite of the torrential downpours 「豪雨」 describes.

Use 「豪雨」 for violent rain that may trigger disasters, as in 「集中豪雨」 and 「豪雨災害」. For everyday heavy rain say 「大雨」, and in casual speech a downpour is 「土砂降り」; the opposite is 「小雨」.

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

1. 激はげしく多量たりょうに降ふる雨あめ。
2. 雨あめの強つよさに関かんする天気予報てんきよほう用語ようごの一ひとつで、著いちじるしい災害さいがいが発生はっせいした顕著けんちょな大雨おおあめ現象げんしょうをいう。