A man sometimes large over 280Lbs who likes to sit and spend their time creeping around malls, stores, and every public place one can think of. Can usually be found anywhere in malls or stores and on sides of roads. Ominous men can be any man who looks like a creeper. Some activities of an ominous man include sitting alone eating in food courts looking creepy, walking around places with having no reason to be their, buying strange things at convenient stores, driving weird looking cars like vans pickup trucks and old volvos, and if they are seen on the street corner they can sometimes have dogs that look just as ominous as they do.
John- I do not want to alarm you dude, but there is a large ominous man over thier and he looks up to no good
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".