Ominousity

Generally used to describe a huge ammount of something which might be scary or tiring.

That staircase had an..ominousity..of hard-stone steps.

Ominousity by Scotty35 April 24, 2011

ominously 

Grave, Threatening "something that is perceived to have a bad outcome", "does not bode well"
A feeling we're struck by when perceiving a threat, mostly through what we see or hear.

"The employee made a grave mistake, and his boss looks at him Ominously".
"The ship sailed into treacherous waters, now ominously surrounded by rocks under shallow water"
"The survivor of the crash, finds him self in an ominously looking landscape".
"As Indiana Jones walks into the pitch black cave, he is met with an Ominously loud shriek echoing from further in".

ominously by Guardian H-H July 10, 2015

ominisity 

Being extra ominous, having ominous tendencies. Like a cloud.

The cloud has got a lot of ominisity.

ominisity by PamelaHaus December 24, 2021