Translation guide
A formal daytime coat with tails, worn at weddings or formal events. In Japanese, it is usually referred to by the borrowed English term.
モーニングコート
morning coat
The specific garment: a black or grey coat with a cutaway front and long tails at the back, worn with striped trousers for formal daytime occasions.
The standard Japanese term, a direct loanword from English. Used in formal contexts like weddings.
新郎はモーニングコートを着ていた。
The groom was wearing a morning coat.
Shortened form commonly used in conversation. Can refer to the coat or the entire outfit.
Literally 'swallowtail coat'. This term is more commonly used for evening tailcoats (white tie), but may occasionally be used for morning coats in older texts. Can cause confusion.
In casual conversation, モーニング is sufficient. In formal writing or when clarity is needed, use the full モーニングコート.
I plan to wear a morning coat to the wedding.
Usually refers to evening tailcoats, not morning coats. Use モーニングコート to be precise.
燕尾服は夜の正礼装です。
A tailcoat is formal evening wear.