off

The preposition 'off' indicates a movement away from a position or a separation from contact. It is often used to describe the act of detaching or distancing something.

• Please take your shoes off before entering the house. — 室内に入る前に靴を脱いでください。
• The cat jumped off the table. — 猫がテーブルから飛び降りた。

As an adverb, 'off' describes the manner of being away or separated from something. It can imply a state of disconnection or removal from a specified location.

• He walked off without saying goodbye. — 彼はさようならも言わずに立ち去った。
• The lights were turned off at midnight. — 明け方に明かりは消された。

When used as an adjective, 'off' characterizes something as not functioning or being inactive. It conveys a sense of disengagement or deactivation from its normal state.

• The machine is off right now. — 現在その機械は停止しています。
• Make sure the lights are off when you leave the room. — 部屋を出るときは明かりが消えているか確認してください。

'Off' as a noun refers to a state of being disconnected or removed. It involves a lack of connection or engagement, particularly in contexts such as systems or relationships.

• There was a sudden off in communication between the two parties. — 二者間の連絡が途絶えた。
• The off of the power supply caused the system to fail. — 電源の切断によりシステムが故障した。

As a verb, 'off' means to remove something or to cause something to cease its operation or connection. It is often used in contexts involving both physical and metaphorical disconnections.

• Please off the lid before pouring. — 注ぐ前に蓋を外してください。
• They decided to off the old software to upgrade. — アップグレードのために古いソフトウェアを削除することにした。