Possible Clues:

• Lacking lustre, sailor is after doctor
• Making a comeback, ex-PM's seen oddly with date lacking sparkle
• Dull, dreary
• Dull and uninteresting
• Evoking a 'ho-hum'
• Flipping poet is none too bright
• Dull poet brought up
• Dreary old slut
• Dull-colored, or just plain dull
• Lacklustre