"一大事" means "big thing", "matter of great importance"

Kanji in this word

Related words "一"

• 一因 (ichiin)one factor
• 一員 (ichiin)one member
• 一応 (ichio)tentatively
• 一群 (ichigun)one group
• 一芸 (ichigei)an art
• 一撃 (ichigeki)blow

Related words "大"

• 一大事 (ichidaiji)big thing, matter of great importance
• 増大する (zodaisuru)enlarge, increase
• 大いに (oini)greatly, very
• 大きい (okii)big, grand, great, large
• 大きさ (okisa)dimensions, size
• 大丈夫 (daijobu)safe, sure

Related words "事"

• 一大事 (ichidaiji)big thing, matter of great importance
• 万事 (banji)everything
• 不祥事 (fushoji)scandal
• 主事 (shuji)director, superintendent
• 事 (koto)circumstances, incident, matter, work
• 事件 (jiken)affair, event, incident