The opening or launch of a new shop, facility, course, event, etc.; also used for the opening ceremony or start (can be a noun or a 'suru' verb).
駅前に新しいカフェが今月オープンする。
A new café in front of the station will open this month.
オープン記念セールで商品が半額になっている。
There is a grand-opening sale and items are half price.
ゴルフ場が来週オープン予定だ。
The golf course is scheduled to open next week.
Open; frank; approachable — describing someone’s attitude or atmosphere (similar to English 'open').
彼はとてもオープンな人で、初対面でも話しやすい。
He is a very open person and easy to talk to even when you first meet him.
社内はオープンな雰囲気で、意見を言いやすい。
The company has an open atmosphere where it's easy to voice opinions.
面接ではなるべくオープンに応答した方が良い。
It's better to answer as openly as possible in an interview.
Describing something that is open or not closed (e.g., open car, open tournament, open collar); used nominally or prenominally.
週末はオープンカーで海までドライブした。
I drove to the sea in a convertible this weekend.
この大会は誰でも参加できるオープン大会だ。
This tournament is an open event that anyone can enter.
夏はシャツをオープンにして着ることが多い。
In summer I often wear my shirt with the collar open.