大変
Common
Adverb
1
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.
2
adjectival nouns or quasi-adjectives (keiyodoshi)noun (common) (futsuumeishi)
immense;enormous;great
あえて言いますが、もし我々がそんなことをすれば大変な誤りを犯すことになると私は思います。
At the risk of sticking my neck out, I think that if we do that, we're making a big, big mistake.
3
adjectival nouns or quasi-adjectives (keiyodoshi)noun (common) (futsuumeishi)
serious;grave;dreadful;terrible
もし期限切れになったら、大変なことになるよ。
There will be hell to pay if I don't make this deadline.
4
adjectival nouns or quasi-adjectives (keiyodoshi)noun (common) (futsuumeishi)
difficult;hard;challenging
5
noun (common) (futsuumeishi)
archaic
major incident;disaster
Other forms
大へん 【たいへん】