1.
serious, grave, important
Of great significance or consequence, often with serious implications.
重大 is a na-adjective meaning serious or important.
FORMS:
- Adverbial: Not commonly used adverbially
- Noun modifier: 重大な + noun
- Noun form: 重大さ (seriousness)
COMMON PATTERNS:
- 重大な決定 (important decision)
- 重大な事故 (serious accident)
- 重大な責任 (serious responsibility)
- 重大発表 (important announcement)
SIMILAR WORDS:
- 重要: important (significance)
- 重大: serious/grave (consequences)
- 深刻: serious (problems, situations)