Adverbs and adjectives behaving badly

What's the right way to use bad, or badly?

Michigan Radio's Rina Miller talks with Anne Curzan, a professor of English at the University of Michigan, who specializes in linguistics.

Linguists call "feel" a linking verb, which requires an adjective to follow it. Curzan says that's where people get confused.

"I feel happy, I feel bad, but people get confused because with other verbs you'd get an adverb there, I feel bad, I cook badly," Curzan said.

Listen to the full interview above to hear why we get "slowly" but not "fastly." Plus, you'll hear why it's okay to say, "I'm good."