The word "Pernicious" is often used to describe something that is harmful or destructive, particularly in a gradual or subtle way. In the context of this question, we are asked to choose a word that is closest in meaning to "Pernicious". Let's evaluate the options:
- Innocent: This word means free from guilt or harm, which is the opposite of pernicious.
- Harmful: This matches the meaning of pernicious because both imply having a damaging effect.
- Temporary: Pertaining to something that is not permanent, which does not align with the meaning of pernicious.
- Curious: Describes a desire to learn or know about something, which is not related to being harmful.
After reviewing the options, the word that is most similar in meaning to "Pernicious" is Harmful.