着信（ちゃくしん、chakushin）
- incoming call

The Japanese word 着信 （ちゃくしん） refers to an incoming call or message, primarily in the context of telephones, smartphones, and other communication devices. It signifies the act of receiving a communication, such as a phone call, text message, or other notification. Essentially, it means that a message or call has arrived. The word itself is a noun.

⚫︎着信がありました。 Translation: There was an incoming call/message. ⚫︎着信履歴を確認してください。 Translation: Please check the call/message history. ⚫︎新しい着信があります。 Translation: There is a new incoming call/message.

You would use 着信 in situations where you are talking about receiving a phone call, a text message, or any other form of notification on your phone or device. It's suitable for both formal and informal conversations. You can use it when explaining why you were unable to answer a call or when you want to inform someone that you have received a message.

着信 is typically written in kanji 着信, but it can also be written in hiragana ちゃくしん. The okurigana is standard, with 着 remaining as the base kanji and 信 providing the meaning. There are no other common ways to write this word. The word does not change when conjugating.着信 is the same in different tenses

There aren't direct synonyms that fully capture the meaning of 着信. However, words or phrases that relate to receiving a communication can be considered similar. ⚫︎ 電話 （でんわ）: Telephone call. ⚫︎ メッセージ: Message. ⚫︎ 受信 （じゅしん）: Reception (can be used for messages or signals in general, less common).

⚫︎ 発信 （はっしん）: Outgoing call/message; Sending. ⚫︎ 送信 （そうしん）: Sending; Transmission.

電話が鳴ったので、着信を確認しました。 ・Translation: The phone rang, so I checked the incoming call. ・Explanation: This sentence explains that the speaker heard the phone ringing and then looked at the screen to see who was calling or what message arrived.

新しいメールの着信がありました。 ・Translation: There was an incoming new email. ・Explanation: This sentence indicates that the speaker received a new email notification.

The word 着信 is derived from the kanji 着 (chaku), meaning "to arrive" or "to reach", and 信 (shin), meaning "belief", "trust", or "information/message". Together, they convey the idea of a message or signal arriving or "reaching" a device.