葉書（はがき、hagaki）
- postcard

The Japanese word 葉書 (はがき, *hagaki*) refers to a postcard. It's a single sheet of thick paper used for sending brief messages through the postal service. Unlike letters, 葉書 do not require an envelope, making them convenient for short communications. The front of the 葉書 is usually used for the address and postage stamp, while the back is for the message.

⚫︎葉書を書きました。 Translation: I wrote a postcard. ⚫︎友達に葉書を送った。 Translation: I sent a postcard to my friend. ⚫︎旅行から葉書を受け取りました。 Translation: I received a postcard from a trip.

You use 葉書 when you want to send a short message quickly and easily. It's suitable for simple greetings, brief updates, or announcements. It's a casual form of communication, less formal than a letter. You can use 葉書 to send birthday greetings, thank you notes, travel updates, or even to RSVP (Répondez S'il Vous Plaît) to an invitation.

⚫︎The word is typically written with the kanji 葉書 (はがき). ⚫︎The reading is always はがき in hiragana. ⚫︎There are no variations in okurigana for this word.

There are no direct synonyms for 葉書 in Japanese, as it is a specific type of mail. However, the closest equivalent would be something that could also act as a postcard, like a self-made 葉書.

There aren't specific antonyms in the same sense as with adjectives or verbs. The opposite of a 葉書 would be a different form of mail. A letter (手紙, *tegami*) is the closest antonym in the sense that it requires an envelope and usually provides more space for writing.

誕生日のプレゼントのお礼に葉書を書きました。 ・Translation: I wrote a postcard to thank them for the birthday present. ・Explanation: This sentence illustrates the use of 葉書 to express gratitude.

旅行から、家族に葉書を送りました。 ・Translation: I sent a postcard to my family from my trip. ・Explanation: This sentence shows the use of 葉書 to update family during travel.

The word 葉書 literally translates to "leaf paper." 葉 (ha) means "leaf," and 書 (ki) or 書く (kaku) means "to write." Originally, early postcards were small and were more like a leaf-shaped piece of paper, hence the name.