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to open
01
開ける, 開く
to move something like a window or door into a position that people, things, etc. can pass through or use
Transitive: to open a door or window
Example
He opens the window to let in some fresh air.
My sister and I opened the door to see what was inside the room.
1.1
開く（あく）, 開ける（あける）
(of a door or window) to become open so that people, things, etc. can pass through
Intransitive
Example
He pressed a button, and the garage door opened, revealing his car.
The door opened slowly as she turned the handle.
02
開く (ひらく), オープンする (おーぷんする)
to unfold or spread something that was previously closed or folded
Transitive: to open something folded
Example
The flower opened its petals to the warmth of the sunlight.
The hiker opened the map to find the trail route.
03
開会する, 始める
to start or begin a meeting, speech, performance, etc.
Transitive: to open a meeting or performance | to open a meeting or performance with sth
Example
The mayor will open the town hall meeting with a brief welcome address.
The orchestra conductor will open the concert with a stirring rendition of the national anthem.
04
開放する, 提供する
to facilitate the availability or accessibility of something
Transitive: to open an opportunity
Example
The company 's expansion into international markets has opened new opportunities for growth and revenue.
The discovery of new evidence has opened the door to a retrial for the defendant.
05
オープンする, 開く
to become available for use or access
Intransitive: to open point in time
Example
The online registration portal will open at midnight, allowing participants to sign up for the workshop.
The restaurant will open for lunch service at 11:30 a.m.
06
オープンする, 開く
to initiate action in a card game by making the first move
Transitive: to open a card game
Example
In the game of poker, the player with the highest-ranking card typically opens the betting round.
During the bridge game, the dealer opens the auction by making the initial bid.
07
開く（あく）, 開ける（あける）
to have a passage, entryway, or outlet that allows access to a space or area
Intransitive: to open into a space | to open onto a space
Example
The cave opened into a vast chamber, revealing stalactites hanging from the ceiling.
At the end of the narrow alley, the street opened onto a bustling marketplace.
08
開く, オープンする
to make the contents of a file or an application visible on a computer screen
Transitive: to open a file or an application
Example
To work on the presentation, simply open the PowerPoint file and start editing the slides.
She needed to open the spreadsheet to review the financial data and prepare the budget report.
09
オープンする (おーぷんする), 前座を務める (ぜんざをつとめる)
to perform as the first act before the main show or headliner
Example
The local band will open for the famous rock group tonight.
She was thrilled to open the comedy show for a well-known stand - up star.
open
01
オープン, 開いている
letting people or things pass through
Example
He left the laptop open to continue working on his project.
彼はプロジェクトに取り組み続けるために、ノートパソコンをオープンにしておいた。
She left the door open for her friends to enter.
彼女は友達が入れるようにドアを開いているままにした。
02
営業中の, 開いている
(of business, public building, etc.) ready to be visited or provide a service to customers
Example
My favorite coffee shop is open even on holidays.
私のお気に入りのコーヒーショップは、祝日でも営業中です。
Our bakery is open early in the morning.
私たちのベーカリーは朝早く営業中です。
Example
She has an open attitude and is always willing to discuss any issues that arise.
Her open demeanor encouraged others to trust her easily.
Example
The open road stretched for miles with no traffic in sight.
The field was open, making it perfect for a picnic.
05
無防備な (ぶぼうびな), さらけ出された (さらけだされた)
with no protection or shield
06
公開の, 開放的な
open to or in view of all
07
空いている, 開いている
not having been filled
08
オープン, 開放的な
accessible to all
09
開放的な (かいほうてきな), オープンな (おーぷんな)
not enclosed or restricted
Example
The garden had an open layout, allowing visitors to wander freely among the flowers.
She preferred an open workspace, where collaboration and communication were encouraged.
10
無防備な, 防御されていない
not defended or capable of being defended
11
開いている (あいている), 未封の (みふうの)
not sealed or having been unsealed
12
未決の（みけつの）, 未完の（みかんの）
not brought to a conclusion; subject to further thought
13
オープン, 明白な
open and observable; not secret or hidden
14
オープン, 公正
not requiring union membership
15
オープンな, 開かれた
possibly accepting or permitting
Open
01
開けた空間, 広々とした場所
a clear or unobstructed space or expanse of land or water
02
開放, 開けた場所
where the air is unconfined
03
オープン情報, 公開情報
information that has become public
04
オープン, オープントーナメント
a tournament in which both professionals and amateurs may play
