遅延

Japanese JLPT N1 Vocabulary Japanese ★★★★ 4/5 neutral ちえんchien
読み ちえん
ローマ字 chien
漢字の分解 遅 (chi/oso) — late, slow, behind; 延 (en/no) — extend, stretch, postpone
発音 /t͡ɕi.en/

意味

Delay; postponement; a disruption causing something to occur later than scheduled. Also used technically for latency in communications or computing systems.

A versatile noun and suru verb used across formal contexts: train delays (電車の遅延), project delays (工事の遅延), and network latency (通信遅延). In announcements and official writing, 遅延が発生しています is the standard phrasing for service disruptions. In IT and engineering, 遅延 carries the specific meaning of latency (e.g., 遅延時間 = latency time). More formal than 遅れ, which is the everyday word for being late.

例文

  1. 大雪の影響で東海道新幹線に最大二時間の遅延が発生した。
  2. プロジェクトの遅延を防ぐため、工程管理を徹底する必要がある。
  3. 通信の遅延が大きくなると、オンライン会議の音声が乱れる原因となる。

使い方ガイド

場面: transportation, project management, IT, official announcements

トーン: neutral

起源と歴史

Compound of 遅 (late, slow) + 延 (extend, stretch, defer). The combination conveys the stretching of time beyond the expected limit — a span that should have ended but continues past its boundary.

文化的背景

時代: Modern

世代: All ages

社会的背景: Universal

関連フレーズ

年度 Fiscal year; academic year; official year. A defined annual period used for administrative, educational, or financial purposes, often not aligned with the calendar year. 昭和 The Shōwa era; the imperial reign period of Emperor Hirohito, spanning 1926 to 1989. One of the longest and most historically eventful eras in Japanese history. 歴史的 Historic; historical. Describes something of great historical significance, or something related to history in general. 元号 Era name; the official name given to a reign period in the Japanese imperial system. Japan currently uses the era Reiwa, which began in 2019. 干支 The Chinese zodiac; the traditional sexagenary cycle combining the ten Heavenly Stems and twelve Earthly Branches. Also used colloquially to refer to one's zodiac animal sign. 年号 Era name; Japanese era designation. An official name given to a reign period in the traditional Japanese calendar system. 年度末 End of the fiscal year or academic year; year-end in the Japanese administrative calendar. Typically refers to late March. 戦前 Pre-war; the period before a war. In Japanese, typically refers to Japan before World War II, particularly before 1937 or 1941.
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