Here are some synonyms for "conceited":
* Vain
* Egotistical
* Narcissistic
* Pompous
* Smug
* Self-important
Here are some examples of how "conceited" might be used:
* "He's so conceited, he thinks he's the smartest person in the room."
* "Her constant bragging about her wealth was incredibly conceited."
* "The actress was so conceited that she refused to speak to the fans."
It's important to note that "conceited" is a subjective term, and what one person considers conceited, another may not. However, it's generally used to describe someone who is overly self-absorbed and lacks humility.