Answer: boring

AnswerCrossword Clue
BORINGYawn-inducing
boringto drill into
boringto make (a hole) by drilling or digging
boringto weary by dullness
boringdull person or thing
boringthe inside diameter of a hole or cylinder
boringbored hole
boringan inner cavity
boringto make a hole
BORINGDead, so to speak
BORING[Yawn!]
BORINGHo-hum
BORINGRoutine
BORINGDull
BORINGTedious
BORINGTedious.
BORINGTiresome.
BORINGPiercing.
BORINGBlah
BORINGLikely to elicit a nod?
BORINGAccruing very little interest?