Noun
a long time ago; long before now
see 前々から
先日、学校からの帰りに古本屋に立ち寄ったところ、前々から探していた本を偶然見つけた。The other day, I stopped at a secondhand bookstore on my way home from school and happened to find a book I had been looking for for a long time.
Also written 前前【まえまえ】