Definitions for apaceəˈpeɪs
Random House Webster's College Dictionary
with speed; quickly; swiftly.
Origin of apace:
1275–1325; ME a pas(e) at a (good) pace. See a -1, pace1
quickly, rapidly, speedily, chop-chop, apace(adverb)
with rapid movements
"he works quickly"
Quickly, rapidly, with speed.
Construction of the new offices is proceeding apace.
with a quick pace; quick; fast; speedily