misused

"He gave an incorrect answer to a simple question."

"To understand the word "optimistic," I looked it up in the dictionary. "

"My friend told me there was something in the box, but I didn't know what it was yet. "

"I lost a few marks in the test for spelling words incorrectly."

"He discovered penicillin largely accidentally."

"The teacher will appropriate the new lesson plan to the students' current level of understanding. "

"It is inappropriate to burp at a formal dinner."

"The angry customer mistreated the store clerk, shouting at her and demanding a refund. "

"The feeling is difficult to describe, but not unpleasant."

"The company's low wages and demanding hours were considered exploitative by many workers. "

"It is generally known that the Earth is round."

"The information about the project deadline resolved my uncertainty; now I know what needs to be completed. "