十分

• Reading: じゅうぶん
• Romaji: juubun
• Kanji breakdown: 十 (juu/tou) — ten; 分 (bun/fun) — part, portion
• Pronunciation: /d͡ʑɯː.bɯɴ/

Meaning

Enough; sufficient; plenty; adequate. Indicates that something meets the required amount or level.

A na-adjective and adverb. As a na-adjective, takes な before nouns (十分な量 = sufficient amount). As an adverb, used directly before verbs (十分理解する = to fully understand). Not to be confused with 十分 (juppun, ten minutes). Often used with に as 十分に (sufficiently).

Examples

1. 睡眠は十分にとったほうがいいですよ。 You should make sure to get enough sleep.
2. 準備は十分ですか。 Are you fully prepared?
3. 説明は十分に分かりました。 I understood the explanation perfectly.

Usage Guide

Context: daily life, health, work

Tone: neutral

Origin & History

Compound of 十 (juu, ten) and 分 (bun, part/portion). Ten parts out of ten — the idea of being completely filled or fully sufficient.

Cultural Context

Era: Ancient

Generation: All ages

Social background: Universal