Ho-humness (6)
I believe the answer is:
tedium
'ho-humness' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for tedium that I've seen before include "boring" , "Banality" , "State of being bored" , "Boredom, tiresomeness" , "'Boredom, ennui (6)'" .)