quarrel - A verbal exchange of hostility, often between individuals or groups.
grouch - A person who is in a bad mood and complains a lot.
remark - To make a comment, saying something casually.
overbearing - Unpleasantly or arrogantly controlling.
upgrade - To improve and raise to a higher standard.
whirlwind - Something that involves many quickly changing events; a confused rush.
intermediary - One who acts as a go-between and link between people in order to try to bring about an agreement or conclusion.
tyrant - A cruel and oppressive ruler, usually not restrained by law.
authentic - Genuine or real, not fake or copied.
defensive - To put oneself in a position that is intended to protect oneself.
repudiate - To refuse to accept that something is valid.
confiscate - To take something away from someon, or seize property, as a penalty or punishment.