Possible Clues:

• Spokespersons, at day's end, are not like underwriters!
• Matter-of-fact, as text
• 'Not inverse, it seems, but a bit dull (5)'
• Tedious
• Pedestrian, as writing
• Unlike poetry
• Dull, as text
• Tediously dull
• (Of speech) dull
• Tedious, as text