Related Clues:

• Without pause or interruption
• Express news? Nothing in it — second best
• Relentless surgeon finally looking into organ deficiency?
• On street, after noon, work done without interruption
• Never pausing
• Around-the-clock
• Always going
• Lose nothing, rebuilding pontoons without a break
• Express this in a single sentence!
• Such an unpunctuated description in 'Express'?
• Express unhaltingly
• Around noon numbers peak when no break is given
• Without brakes? Without breaks!
• Said sister's unsurpassed all the time
• Constant bridge partners clinging on to power