大水|おおみずoomizu[4]odaka (tail-high)

1. no-adjectiveflood
   橋はしは大水おおみずで洗い流あらいながされた。↗

   The bridge was washed away by the flood.

• Synonym洪水こうずいNeutralThe standard term for a flood, typical of news and formal reporting; 「大水」 is the colloquial, everyday word with a homely feel.
• Synonym出水しゅっすいWrittenA written-style word for a river flooding or overflowing; used less often than 「大水」.
• Synonym氾濫はんらんWrittenA written word for water swelling and spreading beyond the riverbanks; also figurative for undesirable things running rampant.
• Antonym日照りひでりNeutralA native-Japanese word for drought caused by long rainless spells; the counterpart to 「大水」 flooding.
• Antonym旱魃かんばつWrittenA written word for a long drought with no rain; the direct opposite of 「大水」.

「大水」 is the everyday, spoken word for a flood; choose 「洪水」 in formal or news contexts, and 「氾濫」 when water spills over the banks. For the opposite, drought, use 「日照り」 in speech and 「旱魃」 in writing.

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

1. （おおみず、たいすい）洪水こうずい。