(いさい)

いさい
noun
details; particulars; full particulars
1. details; particulars; full particulars
The detailed points or particulars of a matter, as opposed to a general outline. A somewhat formal, written word, often appearing in business letters, newspaper advertisements, and fixed phrases like 委細(いさい)面談(めんだん) (details to be discussed in person).
委細(いさい)後日(ごじつ)連絡(れんらく)します。
I will contact you about the details at a later date.
委細(いさい)面談(めんだん)(うえ)決定(けってい)いたします。
We will decide after discussing the details in person.
応募(おうぼ)要項(ようこう)委細(いさい)については、ウェブサイトをご(らん)ください。
For the full particulars of the application requirements, please see the website.
契約(けいやく)委細(いさい)()した書類(しょるい)は、来週(らいしゅう)までにお(おく)りいたします。
The document setting out the particulars of the contract will be sent to you by next week.

Composed of () (entrust; detailed) + (さい) (thin, fine, detailed). A formal written word meaning "the fine details" or "full particulars" of a matter. In modern Japanese it lives mainly in set phrases used in business correspondence, job advertisements, and legal notices.

COMMON COLLOCATIONS:

  • 委細(いさい)面談(めんだん): details to be discussed in person — a standard phrase in recruiting ads meaning "we'll give you the details when you come in"
  • 委細(いさい)後日(ごじつ): details (will follow) at a later date
  • 委細(いさい)承知(しょうち): understood in full detail — a somewhat old-fashioned phrase meaning "I fully understand the situation"
  • 委細(いさい)(かま)わず: regardless of the details; without worrying about particulars
  • 委細(いさい)(しる)す: to set out the details (in writing)

SIMILAR WORDS:

  • 詳細(しょうさい): details — by far the most common everyday word for "details." Use 詳細(しょうさい) in almost all contexts; 委細(いさい) is reserved for formal or fixed-phrase use.
  • 子細(しさい): details; particulars — another literary word, largely interchangeable with 委細(いさい) in set phrases.
  • 内訳(うちわけ): breakdown — the itemized components of a total (e.g., of a bill or budget).

USAGE:
Because the word is formal and slightly old-fashioned, using it in casual speech sounds odd. It is best learned as part of the set phrases above, especially 委細(いさい)面談(めんだん), which you will see constantly in want ads. When you simply want to say "the details," use 詳細(しょうさい).