He could think of no worse insult than the term itself.
Calling someone an otaku in Japan would be a very bad insult.
This was the worst insult he could throw at the man without opening his mouth.
Half the time I get worse insults than that!
"I can think of worse insults than that," he said.
'Ordinary' was the worst insult she could find for anything.
"They're acting like religious people," she said, using the worst insult in her vocabulary.
She was only human, after all, and didn't understand that among the fey a personal question is the worst insult.
It was their worst insult one to the other.