| Subject | English | Russian |
| gen. | at/in one fell swoop | одним разом (устарелый – a rather tired old cliche, so use with care, or ironically Liv Bliss) |
| inf. | in one fell swoop | чохом |
| gen. | in one fell swoop | сразу (MargeWebley) |
| idiom. | in one fell swoop | за один присест (VLZ_58) |
| idiom. | in one fell swoop | разом (YNell) |
| gen. | in one fell swoop | одним махом |
| gen. | in one fell swoop | одним махом (Alexander Demidov) |
| inf. | in one fell swoop | зараз |
| gen. | in one swoop | одним махом (NGGM) |