完成する

• Reading: かんせいする
• Romaji: kansei suru
• Kanji breakdown: 完 (kan) — perfect, complete; 成 (sei/na) — become, accomplish
• Pronunciation: /kaŋ.seː.sɯ.ɾɯ/

Meaning

To complete; to finish; to be completed. Describes bringing something to its final, finished state.

A Group 3 (irregular) する verb formed from the noun 完成 (completion). Can be used both transitively (to complete something) and intransitively (something is completed). Often used for projects, buildings, artworks, and other significant creations.

Examples

1. 新しい橋がやっと完成しました。 The new bridge was finally completed.
2. レポートを今週中に完成させたいです。 I want to finish the report by the end of this week.
3. この絵は完成するまでに三か月かかった。 It took three months to complete this painting.

Usage Guide

Context: work, construction, creative projects

Tone: positive

Origin & History

Compound of 完 (kan) meaning perfect or complete and 成 (sei/na) meaning become or accomplish. Together they mean becoming perfectly complete — reaching a finished state.

Cultural Context

Era: Classical

Generation: All ages

Social background: Universal