fault

"The chipped paint on the wall was a small fault in an otherwise beautiful room. "

"No! This is my fault, not yours."

"For all her faults, she’s a good person at heart."

"My brother had a small fault in his homework assignment; he forgot to include the bibliography. "

"The fault lies with you."

"The geologist pointed to the fault in the rock face, explaining how it had shifted the layers of the mountain. "

"slate fault  dirt fault"

"The tennis player was penalized for a fault on his first serve. "

"The electrician found a fault in the wiring, causing the lights to flicker. "

"My fault in the project was a lack of attention to detail. "

"The dog lost the fault and couldn't track the runaway rabbit any further. "

"My teacher frequently faults students for not completing their homework. "

"The earthquake caused the old brick wall to fault along several lines. "

"The student faulted on the math problem, losing points on the quiz. "

"The computer program kept faulting because it was running out of memory. "