一緒に => together N5
一度に => all at once N3
一通り => Basically, (get) over, done N2
Base, base
一方だ => more and more; continue to ~ N2
~且つ(かつ) => and N1
Line up, list
一応 => more or less; pretty much; roughly; tentatively ~ N2
一体 => …the heck; …in the world; …on earth N3
つつ => while; even though; despite ~ N2
一方 => on one hand, on the other hand; although ~ (conjunction) N2
一口に…といっても => Although in general... N2
Evaluate
つつ/つつも => While A, B. Although A (is beng done), B N2
Information, Report
一方では...他方では => On the one hand N2
Compare