all at once Antonyms

not together by degrees one at a time asynchronously progressively one by one bit by bit unassisted unaccompanied separately chronologically followingly at a regular pace deeply divided in succession sequentially one after the other one after another inch by inch on the trot gradationally up successively gradually gingerly disunited disjointly consecutively circumspectly cautiously casually asunder haltingly independently solo solitarily solely slowly singly piecemeal moderately lazily individually apart