Related Clues:

• Century part
• The '80s, say
• Century fraction
• Roaring '20s, for one
• Decennium
• Ten years
• Although twice as long as 1 across, he's no good in the river
• It takes years for this to have rotted, by the sound of it
• The rotter in the river for years
• For ten years been getting rotten, by the sound of it
• The '70s, e.g
• Time for this to have ten ears, by the sound of it
• It lasts for years
• Period just short of 26 years? Sounds bad
• Blair's stint said to have progressively deteriorated