at once Antonyms

at a regular pace in the long run in the future in future inch by inch sluggishly gradationally chronologically by degrees at some point sooner or later one at a time after a while progressively in the long term Over time after some time after a bit at some point in the future at a future time at a future date in succession unhurriedly some day slowly but surely one of these days one day sequentially one after another little by little bit by bit later on later inchmeal haltingly gradually gingerly gently eventually continuously consistently consecutively circumspectly cautiously casually lazily leisurely ultimately tardily systematically