This is the 9428th most frequent Japanese word.
種明かし
Revealing the trick or secret behind something.
種明かし is used to describe the action of revealing the trick or secret behind a magic performance to someone.
魔術師が観客にトリックの種明かしをした。
The magician revealed the trick to the audience.
種明かし here refers to the critical clue or explanation that resolves the story's suspense or mystery.
この作品の魅力は、最後の種明かしまで分からない。
The appeal of this work is not understood until the final revelation.
種明かし is used to signify explaining a story or situation clearly to make it believable or understandable.