Which word means about the same thing as impassive?

An antonym for the word decorum is...

Another word for fight is...

I left the window ________, or slightly open, so I could feel the cool fall breeze.

I was unwilling, or _______ to tell the mean, hateful man I was sorry.

I found myself in a(n) _______, a state of total confusion, when I had to decide what to buy my dad for Christmas!

The boy was trying to look cool in front of his friends so he decided to _________ over to the cash register rather than walking quickly.