Final answer:
If something is 'infernal', it means it is extremely unpleasant or evil.
Step-by-step explanation:
If something is infernal, it is extremely unpleasant. The term 'infernal' is often used to describe something that is associated with hell or the devil. For example, in literature, an infernal creature might refer to a demon or a monstrous being. So, if you come across the word 'infernal' in a text, you can infer that it is used to indicate something that is extremely unpleasant or evil.
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