ominous /omˈi-nəs/

1. Relating to, or containing, an omen
2. Portending evil
3. Inauspicious

• cacographic
• cacographical
• cacographies
• cacography
• cacolet
• cacolets
• cacologies
• cacology
• cacomistle
• cacomistles
• cacomixl
• cacomixls
• cacoon
• cacoons
• cacophonic
• cacophonical
• cacophonies
• cacophonious
• cacophonous
• cacophony
• cacotopia
• cacotopian
• cacotopias
• cacotrophies
• cacotrophy