延長する

• Reading: えんちょうする
• Romaji: enchou suru
• Kanji breakdown: 延 (en) — extend, postpone; 長 (chou) — long
• Pronunciation: /eɴ.tɕoː.sɯ.ɾɯ/

Meaning

To extend; to prolong; to lengthen a period, deadline, or physical distance.

The する-verb form of 延長. Used when actively extending something such as a contract, deadline, operating hours, or a route. In formal contexts, often appears as 延長いたします (humble) or 延長されます (passive/honorific).

Examples

1. 図書館の本の貸出期間を延長する方法を教えてください。 Please tell me how to extend the loan period for library books.
2. 工事のため、道路を延長する計画がある。 There are plans to extend the road due to construction.
3. 営業時間を延長するお知らせが出た。 An announcement was made about extending business hours.

Usage Guide

Context: business, administration, daily life

Tone: neutral

Origin & History

する-verb form of 延長 (extension). 延 (extend) + 長 (long) + する (to do). A productive Sino-Japanese verbal compound.

Cultural Context

Era: Classical

Generation: All ages

Social background: Universal