brazen

"Her confidence in her ability to speak French helped her to participate more in class discussions. "

"Despite telling a lie, the boy remained unblushing, showing no sign of shame or embarrassment. "

"The documents pertaining to my car insurance claim are now all submitted. "

"She felt a wave of embarrassment when she realized she had called her teacher "Mom" in front of the whole class. "

"The twins resemble each other."

"He shamelessly boasted about his high score on the math test, even though he had clearly cheated. "

"Is there any way I can get you to reconsider selling your car?"

"The teacher is announcing the winners of the science fair. "

"The violinist was a master of her instrument."

"The fortress is impenetrable, so it cannot be taken."

"The teacher's disapproval of the student's cheating was clear in her stern voice. "

"My classmates and I are working on a group project for science. "