鯨（くじら、kujira）
- whale

The Japanese word 鯨 くじら (kujira) means "whale". It refers to the large marine mammals known for their size and aquatic lifestyle. Whales are found in oceans worldwide and are a diverse group including blue whales, humpback whales, and many others.

⚫︎あの鯨はとても大きいです。 Translation: That whale is very big. ⚫︎鯨は海の中で歌を歌います。 Translation: Whales sing songs in the ocean.

This word is used when you want to talk about a whale or whales in general. It can be used in a variety of contexts, such as describing their appearance, their behavior, or the environment they live in. It's a common and widely understood word.

⚫︎The word is primarily written in kanji as 鯨. ⚫︎The hiragana reading is くじら. ⚫︎There are no variations in the okurigana.

There aren't any perfect synonyms, but you could use phrases to describe a whale, like 海の大きな動物(umi no ookina doubutsu) - "large animal of the sea." or more specifically like シロナガスクジラ(shironagasu kujira) - "blue whale".

There aren't direct antonyms for 鯨. It's a noun that refers to a specific animal. However, you could contrast it with other animals or things.

夏の海で鯨を観察するのは素晴らしい経験でした。 ・Translation: Observing whales in the summer sea was a wonderful experience. ・Explanation: This sentence uses the word 鯨 to describe the act of observing whales.

このレストランでは、鯨料理は提供していません。 ・Translation: This restaurant doesn't serve whale dishes. ・Explanation: This sentence shows the use of 鯨 to refer to whale meat or cuisine.

The etymology of 鯨 is somewhat debated, but it's generally believed to be an ancient Japanese word. The origins are not precisely known, but it's been a part of the Japanese language for a very long time, likely predating the widespread use of kanji.