一緒に => together N5
一度に => all at once N3
の上で(は)/~上 => according to; from the viewpoint of ~ N2
上 => In terms of... N1
Position, perspective
一通り => Basically, (get) over, done N2
Base, base
一方だ => more and more; continue to ~ N2
上げる => to finish doing ~ N3
以上 (の) => Just mentioned above N1
Standard
一応 => more or less; pretty much; roughly; tentatively ~ N2
一体 => …the heck; …in the world; …on earth N3
その上 => besides; in addition; furthermore ~ N3
以上(は) => because; since; seeing that ~ N2