amain apace astir at it at once at work busy by forced marches cursorily employed en route engaged expeditiously feverishly full of business furiously hand over fist hard at it hard at work hastily helter-skelter hotfoot hurriedly hurry-scurry immediately in harness in motion in passing in transit instantly occupied on duty on the bum on the gad on the go on the hop on the job on the jump on the move on the road on the tramp on the wing pell-mell promptly quickly slapdash speedily superficially swiftly tied up under sail under way with a rush with all haste with dispatch with haste working