1.
open collar; open-necked style
A shirt or garment style with the collar worn open, without a tie or buttoned-up neckline. Refers especially to the open-collar dress shirts commonly worn in summer in Japan.
開襟シャツを着る。
To wear an open-collar shirt.
夏場は開襟シャツで出勤する人が多い。
In summer, many people go to work in open-collar shirts.
クールビズの普及で開襟スタイルが定着した。
The spread of Cool Biz has established the open-collar style.
Combines 開 (open) + 襟 (collar). Most commonly seen in the compound 開襟シャツ.
HOMOPHONE WARNING:
Do not confuse with 解禁 (lifting a ban), which has the same reading but different kanji and meaning.
COMMON COLLOCATIONS:
- 開襟シャツ: open-collar shirt
- 開襟スタイル: open-collar style
CULTURAL NOTE:
The 開襟 style became widespread in Japan after the government launched "クールビズ" (Cool Biz) in 2005, encouraging office workers to dress casually in summer to reduce air conditioning use. During the Cool Biz period (typically May–September), wearing an 開襟シャツ without a tie is standard in many workplaces.