サングラス（サングラス、sangurasu）
- sunglasses

The Japanese word サングラス refers to sunglasses. It is a piece of eyewear worn to protect the eyes from bright sunlight or other strong light. They typically have tinted lenses. They are commonly used for fashion, driving, and various outdoor activities. The word specifically focuses on the tinted glasses themselves, not other types of glasses.

⚫︎サングラスをかけて、太陽の光を避ける。 Translation: Put on sunglasses to avoid the sunlight. ⚫︎夏には、いつもサングラスをかける。 Translation: In summer, I always wear sunglasses. ⚫︎新しいサングラスを買いたい。 Translation: I want to buy new sunglasses.

You can use サングラス in any situation where you are referring to sunglasses. This includes conversations about: ⚫︎ Wearing them. ⚫︎ Buying them. ⚫︎ Looking at someone wearing them. ⚫︎ Describing the color or style of them. ⚫︎ Discussions about eye protection.

サングラス is written in katakana, サングラス, because it's a loanword from English. There are no other ways to write it. There are no variations in okurigana.

There aren't many direct synonyms in Japanese for sunglasses, as the word itself is widely understood. However, depending on context, you might use phrases to describe: ⚫︎ The function: 日よけメガネ（hiyoke megane) - "sunshade glasses". ⚫︎ The type: 色のついたメガネ（iro no tsuita megane) - "colored glasses". If you are talking about regular glasses (not sunglasses), you could use メガネ ("megane")

There aren't any direct antonyms because サングラス are a specific type of glasses. The opposite of wearing サングラス would be not wearing them. Other examples are: ⚫︎ メガネ - Glasses (generic). ⚫︎ コンタクトレンズ - Contact lenses.

今日は天気が良いから、サングラスを持って行こう。 ・Translation: The weather is nice today, so I'll bring my sunglasses. ・Explanation: This sentence uses サングラス to plan for a sunny day.

彼女の新しいサングラスはとてもおしゃれだね。 ・Translation: Her new sunglasses are very stylish, aren't they? ・Explanation: This sentence describes the appearance of someone's サングラス.

The word サングラス comes directly from the English word "sunglasses". Japanese adopted it as a loanword, hence the katakana script.