Simple categories matching horrible:

• disease,
• thing,
• action,
• activity,
• affliction,
• illness,
• event,
• fate,
• creation,
• disaster,
• happening,
• condition,
• situation,
• catastrophe,
• act,
• crime,
• weapon,

Members with property horrible:

• vomiting,
• holocaust,
• psoriasis,
• sexism,
• cancer,
• mummy,
• ghost_droppings,
• murder,
• violence,
• dog_fighting,
• bad_acting,
• std,
• suicide,
• war,
• hunger,
• civil_war,
• cigarette,
• online_child,
• flood,
• slander,
• passing_gas,
• sexual_assault,
• alcohol,
• infanticide,
• racism,
• credit-card_fraud,
• drug,
• stalinism,
• breed,
• earthquake,
• job_cutting,
• slavery,
• family_death,
• cataract,
• assassination,
• hiroshima_bomb,
• original,
• wind,
• natural_disaster,
• broken_glasses,
• pedophilia,
• diabetes,
• sonic_gun,
• biological_warfare,
• teen_suicide,
• ego_inflation,
• crime,
• dismemberment,
• day,
• politics,
• death,
• parkinson_disease,
• alcoholism,
• child_labour,
• street_litter,
• high_cholesterol,
• lie,
• robbery,
• disease,
• emphysema,
• assault,
• abuse,
• missile,
• raping_child,
• child_molestation,
• hi,
• killing,
• huge_wave,
• libel,
• limited_access,
• fast_food,
• recent_holocaust,
• bomb,
• ignorance,
• heart,
• juvenile_diabetes,
• battered_woman,
• pancreatic_cancer,
• euthanasia,
• bullet,
• arranged_marriage,
• battery,
• ulcer,
• asthma,
• angina,
• flu,
• stroke,
• gun,
• cat_litter,
• tsunami,
• chocolate,
• famine,
• pornography,
• severe_depression,
• wow,
• excessive_modulation,
• work,
• ethnic,
• riot,
• terrible_lie,
• nazi_holocaust,