What's your personality?

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?

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.

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.

To determine whether the answers provided are grammatically correct, we can analyze each option individually:

1. I'm kind of introverted. - This sentence is grammatically correct. The word "kind" serves as an adverb modifying the adjective "introverted."

2. I'm kind of introvert. - This sentence is not grammatically correct. The noun "introvert" is missing its plural marker "-ed" to match the verb "am" ("I am").

3. I'm kind of introvertish. - This sentence is not commonly used, but it is understandable. The word "introvertish" is an adjective formed from the noun "introvert" with the suffix "-ish" added to indicate a tendency toward being an introvert.

4. I'm kind of extroverted. - This sentence is grammatically correct. The word "kind" serves as an adverb modifying the adjective "extroverted."

5. I'm kind of extrovert. - This sentence is not grammatically correct. The adjective "extrovert" should be pluralized to match the verb "am."

From the options provided, the most commonly used and grammatically correct answers are options 1 and 4, "I'm kind of introverted" and "I'm kind of extroverted," respectively.