おお

• おおUsage49%

  Standard hiragana spelling for this interjection.

• おうUsage25%

  Variant spelling; pronunciation is the same as おお.

• おーUsage12%iUsage for this spelling across all readings, not one reading alone.
  • おー
  • おお

    Emphatic or drawn-out spelling using long vowel mark.

• オーUsage10%iUsage for this spelling across all readings, not one reading alone.
  • オー
  • おお

    Katakana spelling, often used for emphasis or in manga.

• オオUsage5%
• オウUsage<1%

A natural exclamation; the exact origin is uncertain. The kanji 応 is an ateji used for its sound, not its meaning.