(adv.) On the way or road.

a propos along the way amain apace apropos apropos of as one goes at once by forced marches by the by by the way cursorily en passant en route expeditiously feverishly for example furiously hand over fist hastily helter-skelter hotfoot hurriedly hurry-scurry immediately in mid-progress in transit in transitu incidentally instantly on the road on the run on the way on the wing par exemple parenthetically pell-mell promptly quickly slapdash speaking of speedily superficially swiftly with a rush with all haste with dispatch with haste