1.
meaningful, worthwhile, significant
Having value or purpose; worth spending time or effort on. Used to describe experiences, time, discussions, and activities that produce something positive.
有意義な時間を過ごした。
I spent a meaningful time.
とても有意義な議論ができた。
We were able to have a very worthwhile discussion.
休日を有意義に使うために読書をしている。
I'm reading to make good use of my day off.
有意義 is a na-adjective meaning something has real value or purpose — worth the time and effort invested.
FORMS:
- Na-adjective: 有意義な時間 (meaningful time)
- Adverbial: 有意義に過ごす (to spend meaningfully)
COMMON COLLOCATIONS:
- 有意義な時間 (meaningful time)
- 有意義な経験 (worthwhile experience)
- 有意義な議論 (meaningful discussion)
- 有意義な活動 (worthwhile activity)
- 有意義に使う (to put to good use)
CONTRAST:
- 無意味: meaningless, pointless (closer antonym in everyday use)
- 無駄: wasteful, useless (focuses on wasted effort)
REGISTER:
Slightly formal. Often used in speeches, evaluations, and reflections. Very common after events or experiences: とても有意義な一日でした (It was a very meaningful day).