Adverb (fukushi)
very; greatly; terribly; awfully
1日中歩き回って大変疲れた。I am dead tired from walking around all day. Na-adjective (keiyodoshi), Noun
immense; enormous; great
serious; grave; dreadful; terrible
difficult; hard; challenging
Noun
major incident; disaster
Archaic
Also written 大へん【たいへん】