What's your personality?

Question

What are you like?

1. I'm kind of introverted.
2. I'm kind of introvert.
3. I'm kind of introvertish.
4. I'm kind of extroverted.
5. I'm kind of extrovert.
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Are the answers all grammatical?
Which ones are commonly used?

Answer 1

1 - correct
2 - I'm kind of AN introvert.
3 - It's slangy to say "introvertish". I don't think that's a real word.
4 - correct
5 - I'm kind of AN introvert.

Answer 2

Actually, "introvert" and "extrovert" are transitive verbs, so 1 and 4 are the most correct. In common usage, we do sometimes us the words as nouns, so 2 and 5 are acceptable, but not really correct.