mordant

"The prisoners were kept in a secure compound. "

"The corrosive of constant criticism slowly eroded her confidence. "

"The teacher was pointing to the map on the wall. "

"The scientist carefully examined the substance to determine its chemical composition. "

"The new bicycle's metallic silver paint gleamed in the sunlight. "

"He listened carefully to his mother's concerns, feeling sorrowful about her disappointment. "

"The new software will facilitate online communication among students in the class. "

"The heavy backpack was pressing down on his shoulders. "

"The spilled coffee permanently stained the white carpet. "

"The critical factor in getting a good grade on the history test was understanding the timelines. "

"I have no comment on that."

"The glutinous rice flour made the dough very sticky and hard to handle. "