also: フライデイ
noun
Loanword from English; used in contexts such as casual conversation, brand names, or when emphasizing the English origin. The native Japanese word is 金曜日.
来週のフライデーにパーティーがある。
There's a party next Friday.
フライデーはいつも忙しい。
I'm always busy on Fridays.
The standard Japanese word for Friday. フライデー is a loanword used in more casual or trendy contexts.
Borrowed from English 'Friday'.