Why Is It Grammatically Correct to Say I'm Good?
The Myth — That You Should Really Say "I'm Well" — Relies on the Idea That Modifying a Verb Requires an Adverb. the Verb "Am," However, Involves Special...
The myth — that you should really say "I'm well" — relies on the idea that modifying a verb requires an adverb. The verb "am," however, involves special circumstances that make "I'm good" a perfectly acceptable answer. ... The circumstances then require either an adjective or noun in the predicate, instead of an adverb.
Should you say I'm good or I'm well?
To sum it up, if someone asks you how you're doing: “I'm good” is correct. “I'm well” is correct.
What is the meaning of I'm good?
"I'm good," means I am well behaved.