Noblemen one ignored in silly serial (5)
I believe the answer is:
earls
'noblemen' is the definition.
(earl is a kind of nobleman)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for earls that I've seen before include "Noblemen (with a Court?)" , "They're below marquess and above viscount" , "London exhibition centre" , "Laser the British peers" , "members of the House of Lords" .)