大事

Noun

 * 1) important matter; big deal; major event; great thing

Adverb

 * 1) in a big way

Adjective

 * 1) important
 * 2)  difficult, highly troubling
 * 3)  seriously ill or injured; grave

Noun

 * 1) An important thing; a serious matter; a valuable thing
 * 2)  trouble

Noun

 * 1) a serious matter