ominous /omˈi-nəs/

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

omˈinously adverb

• horse nails
• horse of a different colour
• horse opera
• horse operas
• horse pistol
• horse pistols
• horseplay
• horseplays
• horsepond
• horseponds
• horsepower
• horsepowers
• horse race
• horse races
• horse-racing
• horseradish
• horseradishes
• horseradish sauce
• horseradish sauces
• horseradish tree
• horseradish trees
• horse rake
• horse rakes
• horse-rider
• horse-riders