morally bad or wrong; "evil purposes"; "an evil influence"; "evil deeds"
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dangerous
causing fear or anxiety by threatening great harm; "a dangerous operation"; "a grave situation"; "a grave illness"; "grievous bodily harm"; "a serious wound"; "a serious turn of events"; "a severe case of pneumonia"
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noxious
injurious to physical or mental health; "noxious chemical wastes"; "noxious ideas"
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sinful
having committed unrighteous acts; "a sinful person"