Dictionary / Vocabulary / 一から
いちから
from the beginning; from scratch
Also written １から
一からやるんだから、大胆にイメチェンすればよかったのに。
As you're starting from scratch you might as well have gone for a major makeover...
彼女は姉とは１から１０まで違う。
She is different from her sister in every way.
十把一からげにしないで、もう少し個別案件をきちんと検討してくださいよ。
Don't lump all these issues together. You need to give every single one careful consideration.