レタス（レタス、retasu）
- lettuce

The Japanese word レタス refers to "lettuce," the leafy green vegetable commonly used in salads, sandwiches, and other dishes. It is a loanword from English. レタス generally refers to all varieties of lettuce, including iceberg, romaine, and butter lettuce.

⚫︎サラダにレタスを入れます。 Translation: I'll put lettuce in the salad. ⚫︎レタスはシャキシャキしていて美味しい。 Translation: Lettuce is crunchy and delicious. ⚫︎サンドイッチにレタスとトマトを挟みました。 Translation: I put lettuce and tomatoes in the sandwich.

You use レタス when talking about the vegetable lettuce in any context. It's used in everyday conversations about cooking, eating, or shopping. You can also use レタス when describing the appearance or texture of lettuce.

レタス is written in katakana. It's always written this way because it is a loanword from English. There are no other ways to write it, and there are no variations in how it’s written.

There are no direct synonyms for レタス in Japanese. The closest would be general terms for vegetables like 野菜 (yasai), which means "vegetables." However, レタス specifically refers to lettuce.

There are no direct antonyms for レタス. You could consider the category of vegetables to be the opposite of non-vegetable food items.

今日の夕食は、レタスとベーコンのサラダにする。 ・Translation: For dinner today, I'll have a lettuce and bacon salad. ・Explanation: This sentence describes the planned dinner, highlighting lettuce as one of the ingredients.

このレタスは新鮮で、味が濃い。 ・Translation: This lettuce is fresh and has a rich flavor. ・Explanation: This sentence describes the quality of the レタス, noting its freshness and taste.

The word レタス comes directly from the English word "lettuce."