大だいヒント

noun

major hint; important clue; great tip

Used when someone gives a very helpful or crucial hint, often in puzzles, games, or problem-solving contexts.

• 先せん生せいが大だいヒントをくれたので、問もん題だいが解とけた。

  The teacher gave me a major hint, so I was able to solve the problem.

• そのクイズ番ばん組ぐみで、司し会かい者しゃが大だいヒントを出だした。

  On that quiz show, the host gave a great tip.