Relaxed, to be calm and at peace, not anxious or tense.
She was trying to relax but then she got a call from her boss.
He hasn't relaxed for a long time, so he's exhausted and difficult to be around.
Arrogant, to have an exaggerated sense of one's importance or abilities, the opposite of modest.
I wasn't impressed by her arrogant attitude.
Sometimes the rich and powerful can be very arrogant and greedy.
Prejudiced, to have negative feelings towards something without good reason or experience.
She has a prejudice against people who come from the countryside.
As a company, we don't allow prejudice of any kind, including race or religious differences.
Neutral, to be without prejudice and not take sides.
We expect the judge at the trial to be neutral and allow both sides to present their evidence to the jury.
The referees in a match need to be neutral, so that the game is fair.
Proper or appropriate, the way it is supposed to be.
That kind of language isn't appropriate in this situation, because it doesn't show respect.
When he came to the interview he wasn't dressed properly, so he made a bad impression.
（I expect you to act appropriately and whatever you do，don't drink too much.）
