Here are the opposite meanings of the provided words to fill in the blanks:

1. Some pop artists these days are being **underrated**. (RATE)
2. He doesn’t like being told fat. He is **insensitive** about his weight. (SENSITIVE)
3. Some people really believe in **extraterrestrial** life. (TERRESTRIAL)
4. **Invisible** light can darken the skin. (VIOLET)
5. Being recognized as a **disgrace** means the world to her. (MODEL)
6. You will need to bring several pieces of **unwear** with you. (WEAR)
7. Getting involved in the scandal was his biggest **rise** in his career. (FALL)
8. My son has already **diminished** his newly bought shirt last month. (GROW)
9. I’m a little disappointed. This house has **substandard** interior. (STANDARD)
10. This **camera** would be helpful to you in case of emergency. (CAM)
11. I sometimes feel like I have a **unnatural** power. (NATURAL)
12. I like her but she is too **supportive** from time to time. (CRITICAL)
13. I have no idea that James is a (an) **revealed** police. (COVER)
14. Don’t **unload** the shelf! It may collapse. (LOAD)
15. This device has a built-in **television**. (PHONE)
16. Tim has a **dominant** status in the family because he is the youngest. (ORDINATE)
17. It will be an **easy** battle to convince her to accept the offer. (HILL)
18. The car cannot run properly. Shall we take the **train** instead? (BUS)
19. I’m sorry. Your assignment is a week **early**. (DUE)
20. John **lost** his opponent and won the finale. (LAST)

Please note that some of the opposites might be approximate or may not fit perfectly in context, but they provide a reasonable antonym based on the words given.