In this paper, we define and study generalizations of expansiveness, namely nexpansiveness, ℵ 0 -expansiveness, continuum-wise expansive and meagre expansiveness for non-autonomous discrete dynamical systems. We discuss various properties of such non-autonomous systems and give necessary examples. We prove results related to non-existence of ℵ 0 -expansive and meagre expansive non-autonomous system on certain spaces. We also study relation between ℵ 0 -expansive and meagreexpansive non-autonomous systems.