シール（シール、shiーru）
- sticker

The Japanese word シール, pronounced "shi-ru," is a loanword from English and it primarily refers to "seal," "sticker," or "label." It can be a small adhesive piece of paper or plastic used for decoration, identification, or sealing something. Essentially, シール covers anything that is a sticker or label that sticks to a surface.

⚫︎ この箱にシールを貼ってください。 Translation: Please put a [シール] on this box. ⚫︎ 可愛いキャラクターのシールを集めています。 Translation: I collect cute character [シールs]. ⚫︎ 冷蔵庫に食材の賞味期限のシールが貼ってあります。 Translation: There is a freshness date [シール] on the refrigerator.

You use シール in conversations when talking about stickers, labels, or seals. It's a common word used in everyday situations, from shopping to crafting to managing food items. You can use it to describe the object itself, its purpose, or the act of applying it (sticking a [シール]).

⚫︎ シール is written in katakana, as it's a loanword. ⚫︎ There are no other common ways to write this word. ⚫︎ The okurigana (hiragana following the kanji, which isn't applicable in this case) is not used because it's in katakana.

⚫︎ ステッカー ("sutekkā") - This is another loanword from "sticker," often used interchangeably with シール. ⚫︎ ラベル ("raberu") - This is from "label" and is used when referring to labels, particularly on products.

While there isn't a direct antonym, words or phrases that would mean "un-stick" or "remove" could be considered opposites in concept. These might include: ⚫︎ はがす ("hagasu") - to peel off/ to remove. ⚫︎ 剥がす ("hagasu") - another way to express "to peel off/ to remove."

この[シール]は防水ですか？ ・Translation: Is this [シール] waterproof? ・Explanation: This sentence uses シール to inquire about the properties of the sticker, specifically its water resistance.

プレゼントに可愛い[シール]を貼って飾りましょう。 ・Translation: Let's decorate the present by putting a cute [シール] on it. ・Explanation: This example explains decorating a present. It expresses the action of sticking a [シール] onto a present.

The word シール comes directly from the English word "seal," but it has evolved in Japanese to encompass "sticker" and "label" as well, broadening its scope compared to the original English term.