Related Clues:

• March joylessly
• Tramp seen half cut alongside first of innumerable gin bottles
• Auntie's boss will be taken in by genuine tramp
• Tenor is bad mannered about key produced by a giant, by the sound of it going walkabout
• Obstacle-filled endeavor
• Pirates disturbed trail
• Walk through deep mud, say
• Painful proceeding
• Tramp stumbles around atomic base
• Hard stretch of work
• Tedious crossword puzzle, say
• Emulate a 30-Across, say
• Long tedious task
• Gad about, like pirates at sea?
• Very tiring work