Causing horror; terrible; shocking.
Tremendously bad.
A person wearing a comic or grotesque costume in a parade of horribles.
A thing that causes horror; a terrifying thing, particularly a prospective bad consequence asserted as likely to result from an act.
Specifically, giving indication of a coming ill; being an evil omen
Of or pertaining to an omen or to omens; being or exhibiting an omen; significant.