いたずら（いたずら、itazura）
- mischief

The Japanese word いたずら primarily means "mischief," "prank," or "trick." It refers to playful behavior that is often intended to cause a little bit of trouble or fun, but not with malicious intent. いたずら can range from harmless jokes to slightly naughty actions. It implies a sense of playful naughtiness, or a lighthearted intent. The core idea is to do something that might be seen as slightly disruptive or against the rules, but in a way that’s not genuinely harmful or aggressive.

⚫︎子供はいたずらが好きです。 Translation: Children love mischief. ⚫︎彼はいつもいたずらをしています。 Translation: He's always playing pranks. ⚫︎そのいたずらはちょっと度が過ぎた。 Translation: That prank went a bit too far.

⚫︎You can use いたずら when talking about a person's playful behavior. ⚫︎It's common to use it to describe something a child does. ⚫︎It's generally suitable for situations where the "mischief" is not seriously harmful. ⚫︎It can be used to describe the act of playing a prank or trick.

⚫︎いたずら is typically written in hiragana. ⚫︎It does not have a common kanji form. ⚫︎Okurigana (the suffix hiragana) is standard. There are no significant variations.

⚫︎悪戯 (いたずら) (slightly more formal and written using kanji) ⚫︎悪さ (わるさ) (mischief, naughtiness, but generally for more serious offenses, or at least acts of a more selfish nature, depending on context.) ⚫︎からかい (karakai) (teasing) ⚫︎ちょっかい (chokkai) (mischief, meddling, but can imply more unwarranted actions.)

⚫︎真面目 (まじめ) (serious, earnest) ⚫︎真剣 (しんけん) (serious, earnest) ⚫︎善良 (ぜんりょう) (good, virtuous)

弟はいつもいたずらばかりして、お母さんに怒られています。 ・Translation: My little brother is always getting into mischief and gets scolded by Mom. ・Explanation: This sentence describes a common situation where a child is engaged in mischievous behavior, leading to scolding.

友達のいたずらで、学校の先生は笑ってしまいました。 ・Translation: The school teacher laughed because of the prank played by my friend. ・Explanation: This example shows that a いたずら, or prank, can sometimes be amusing rather than harmful.

The exact etymology of いたずら is not definitively known, but it is believed to be derived from the verb いたず, which has a meaning related to "mischief" or "being naughty." The suffix ら is added to make it a noun, denoting the act or state of being mischievous.