There is a girl in my lab who, despite having been corrected numerous times in the past, continues to disregard the lab procedures regarding chain of command. She constantly goes over supervisors' heads, stepping far out of line and creating somewhat major problems.
She is a snobbish type with an aura of undeserved superiority and arrogance that borders on a personality disorder and, if I were better read, I would have a much grander metaphoric comparison for her inflated sense of self worth. She is unwilling, or simply unable, to admit her mistakes and has an excuse or response at the ready for any and every question/action/accusation that comes her way.
Anyway, she did it again this morning and I have been obsessed over finding a word that accurately describes this behavior of intentionally ignoring and disregarding her position and the rules set forth. I feel like it's on the tip of my tongue and that I know the word, but just can't remember.