悪い（わるい、warui）
- bad

The Japanese word 悪い (わるい) primarily means "bad," "wrong," or "poor." It can describe a wide range of negative attributes, including moral failings, physical conditions, quality, and circumstances. ⚫︎ It implies something that is not desirable or up to a certain standard. ⚫︎ The specific nuance of 悪い can change depending on the context in which it's used. It can refer to something being morally wrong, physically unwell, of low quality, or in an undesirable state.

⚫︎ 今日は気分が悪い Translation: I feel bad today. ⚫︎ 彼の日本語は悪い Translation: His Japanese is bad. ⚫︎ この食べ物は悪い匂いがする Translation: This food smells bad.

⚫︎ 悪い is an adjective, so it modifies nouns or describes the state of something. ⚫︎ It is used in various situations to express negativity. You can use it to talk about someone’s character, the quality of an object, a person's health, or the state of a situation. ⚫︎ It is a common word, so it's used frequently in everyday conversation.

⚫︎ The standard way to write this word is 悪い in kanji, but it’s often written in hiragana as わるい. ⚫︎ There are no variations in okurigana (the suffix hiragana) for this word.

⚫︎ 駄目 (だめ): "useless," "no good," or "not allowed." ⚫︎ 良くない (よくない): "not good." ⚫︎ 不味い (まずい): "tastes bad," often used for food. ⚫︎ 悪い can often be substituted by a negative form of the opposite word. For example, “not good” is similar to 悪い.

⚫︎ 良い (よい/いい): "good." ⚫︎ 正しい (ただしい): "correct," "right." ⚫︎ 上手い (うまい): "skilled," "good," often used for abilities.

彼は悪いことをした ・Translation: He did a bad thing. ・Explanation: This sentence uses 悪い to describe an action that is morally wrong.

体調が悪いので、今日は休む ・Translation: I'm not feeling well, so I'll take a day off today. ・Explanation: In this case, 悪い describes someone's poor physical condition.

The etymology of 悪い is related to the verb 悪（わる）, meaning "to be bad" or "to be evil." The word has been used in Japanese for a long time and has evolved over time.