待機（たいき、taiki）
- standby

The Japanese word 待機 (たいき) means "to stand by," "to be on standby," "to wait," or "to be in readiness." It implies a state of being prepared to act or respond when needed. This can refer to people, equipment, systems, or processes. The core idea is that something is not actively engaged but is ready and available for a specific task or purpose. The act of 待機待機 often involves a passive waiting period, but it is a period of focused anticipation for a future action or event.

⚫︎ 救急車は事故現場に到着するまで待機していました。 Translation: The ambulance was waiting on standby until it arrived at the accident scene. ⚫︎ パイロットは離陸の許可が出るまで滑走路で待機しました。 Translation: The pilot waited on the runway until permission to take off was granted. ⚫︎ システムはデータの処理を待機中です。 Translation: The system is waiting to process the data.

待機待機 is used in various contexts, including: ⚫︎ **Emergency services:** To describe the readiness of ambulances, fire trucks, or police officers. ⚫︎ **Aviation:** Referring to pilots or aircraft waiting for instructions or clearance. ⚫︎ **Computer systems:** Describing processes or programs that are temporarily inactive. ⚫︎ **Military:** To refer to soldiers or units being on alert and ready for action. ⚫︎ **General situations:** To indicate being prepared to do something, or waiting for instructions or the start of an event. Use 待機待機 when you need to express the state of being ready and available to act or respond.

⚫︎ The word is typically written in kanji as 待機待機, with the reading たいき (taiki) in hiragana. ⚫︎ The verb form of 待機待機 is 待機する (たいきする – taiki suru), meaning "to wait" or "to be on standby". ⚫︎ The suffix "する" (suru) is a verb that can be conjugated to change the tense or form. For example: 待機しました (taiki shimashita – waited/was on standby), 待機しています (taikishiteimasu – is waiting/is on standby).

⚫︎ スタンバイ (sutanbai): This is a loanword from English "standby" and is very close in meaning to 待機待機. ⚫︎ 待つ (matsu): "To wait," a more general term. ⚫︎ 控える (hikaeru): "To refrain," or "to wait in readiness." ⚫︎ 準備する (junbi suru): "To prepare."

⚫︎ 実行する (jikkō suru): "To execute," "to carry out." ⚫︎ 活動する (katsudō suru): "To be active," "to operate." ⚫︎ 作動する (sakudō suru): "To operate," "to activate."

オペレーターは緊急の電話に答えるために24時間待機しています。 ・Translation: The operator is on standby 24 hours a day to answer emergency calls. ・Explanation: This sentence illustrates the constant state of readiness expected of an operator in an emergency situation.

次の試合に向けて、選手たちはベンチで待機していました。 ・Translation: The players were waiting on the bench, ready for the next match. ・Explanation: This shows the players are ready to enter and play in the game.

The word 待機待機 is formed from the kanji 待 (tai) which means "to wait" or "to expect", and 機 (ki) meaning "opportunity," "machine," or "chance." Therefore, the combination suggests waiting for the opportune moment or a prepared status for a specific chance or operation.