Origin: Greek prefix para-
Paranoid has 4 different meanings across 2 categories:
Someone suffering from paranoia
"After losing his job, he became paranoid that neighbors were watching him through their windows and plotting to steal his savings."
suffering from paranoia
"After losing his job, he became so paranoid that he convinced every coworker was secretly plotting to ruin his reputation."
Of, related to, or suffering from paranoia
"After losing his job, he became so paranoid that he convinced himself neighbors were spying on him through their mailboxes."