childish, silly, not characteristic of an adult

easy-going; having a happy personality, kind; sb who is not easily angered or annoyed

behaving in an unpleasant or rude way because you think you are more important than other people; vain

not confident;

strongly motivated to succeed; having a strong desire to do something, so that you will not let anyone stop you

practical, realistic; direct in a sensible honest way

arrogant, full of himself; proud

messy; not neat; not organized

devoted, committed

become angry and annoyed easily; moody

not willing to wait

having a strong desire for success or achievement

showing concern for the needs or feelings of others; thoughtful always thinking of what other people need or want and being careful not to upset them