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 in due course one at a time in due time after a while someday perceptibly 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 unhurried some day slowly but surely ploddingly one of these days one day sequentially one after the other one after another in time unilaterally slow seriatim regularly piecemeal moderately leisurely lazily later inchmeal gradually eventually continuously consistently