ファスナー（ファスナー、fasunaー）
- zipper

ファスナー, pronounced fasunā, is the Japanese word for "zipper." It refers to the device used to fasten two edges of fabric, clothing, bags, etc., together. It operates by interlocking the teeth or coils along the edges.

⚫︎ズボンのファスナーが壊れました。 Translation: The zipper on my pants broke. ⚫︎このカバンのファスナーはスムーズに動きません。 Translation: The zipper on this bag doesn't move smoothly. ⚫︎コートのファスナーを閉めてください。 Translation: Please zip up your coat.

You use ファスナー when referring to zippers in everyday conversation. It's a common word used in clothing stores, when talking about repairs, or when giving instructions about closing or opening items with zippers. It can be used as a noun or sometimes as a verb, particularly with the verb 閉める (to close) or 開ける (to open).

⚫︎This word is primarily written in katakana: ファスナー. This is because it is a loanword from English. ⚫︎There is no variation in okurigana because it is a loanword. ⚫︎It is not typically written with Kanji.

There aren't direct synonyms for ファスナー in the same way you might find them for other Japanese words. The core meaning of "zipper" is always represented by the word ファスナー. However, phrases might include words like チャック, which can sometimes be used to mean zipper, but it is less common and might have a slightly different nuance.

There aren't direct antonyms for ファスナー. You might describe the action as 開ける (to open/unzip) or things without zippers would be the antonym, such as buttons ボタン, but there isn't a single word to express the opposite of a zipper.

ジャケットのファスナーが引っかかってしまいました。 ・Translation: The zipper on my jacket got stuck. ・Explanation: This sentence describes a common problem with zippers.

この服のファスナーは飾りです。 ・Translation: The zipper on this garment is decorative. ・Explanation: This sentence tells us the purpose of the zipper is not functional.

The word ファスナー is a loanword from English "fastener," which originally referred to any device used to join two things together. In modern Japanese, it's used specifically for zippers.