1. He may be conceited, illmannered, presumptuous.
    他也许骄傲自满, 不懂礼貌, 自以为是.

2. He may be conceited, ill-mannered, presumptuous or fatuous,
    这些年轻人也许狂妄自负，举止无理，傲慢放肆，愚昧无知，