軽い（かるい、karui）
- light (weight)

The Japanese word 軽い (かるい) has several meanings, all generally relating to a lack of weight or burden. It can describe physical weight, emotional states, or the seriousness of a situation. The core meaning is "light," but it has nuanced applications. It can imply ease, lack of seriousness, or a simple nature.

⚫︎ このカバンは軽い Translation: This bag is light. ⚫︎ 彼は軽いジョークが好きだ。 Translation: He likes light jokes. ⚫︎ 彼女は軽い病気だった。 Translation: She had a mild illness.

軽い is used to describe something that doesn't weigh much, like an object or a person's physical state. It can describe a lack of seriousness or depth, such as in a joke or a problem. When describing weight, it is a common, direct way to state that something has little mass. The word is adaptable, and its use depends heavily on context. You can use it in everyday conversation.

軽い is most commonly written with the kanji 軽 and the hiragana い. The reading is always かるい. There are no other common ways to write this word. The okurigana is standard; it is always "い".

⚫︎ 明るい (akaruī) - bright, cheerful (can be used metaphorically like "light" in English) ⚫︎ 簡単(かんたん) (kantan) - easy, simple (can be used to mean "light" in terms of burden) ⚫︎ 軽い is close to "unburdened" though not a direct equivalent.

⚫︎ 重い (重い) - heavy ⚫︎ 深刻(しんこく) (shinkoku) - serious, grave ⚫︎ 難しい (難しい) - difficult

この箱は軽いので、簡単に運べます。 ・Translation: This box is light, so it's easy to carry. ・Explanation: This example highlights the physical weight meaning of 軽い and demonstrates the ease with which something can be handled due to its lack of weight.

彼の態度は軽すぎる。 ・Translation: His attitude is too flippant/light. ・Explanation: This sentence uses 軽い to describe a lack of seriousness in someone's behavior, indicating they are not taking something seriously enough.

The kanji 軽 itself means "light" or "easy". The word's origins are rooted in the meaning of lacking weight, and its extended meanings developed over time to include metaphorical applications, such as a lack of seriousness or burden.