Here are some synonyms for "besotted":
* Enthralled
* Smitten
* Head over heels
* Infatuated
* Lovestruck
Example:
* "She was completely besotted with her new boyfriend, ignoring all her friends and responsibilities."
"Besotted" can also be used more broadly to describe someone who is intoxicated or overwhelmed by something, like a drug or a particular idea.
Example:
* "The town was besotted with the idea of building a new stadium."
In both cases, the word implies a loss of objectivity or a lack of control due to strong emotions or influences.