proof

"The teacher asked for proof that the student completed the assignment. "

"The proof that the student understood the lesson was their ability to answer all the difficult questions correctly. "

"The proof of the student's hard work was evident in the excellent grades. "

"The proof of her hard work was the excellent grade she received on the test. "

"Despite the criticism, her proof in pursuing her dream remained unshaken. "

"The printer made a proof of the invitation before sending it to the entire family. "

"The proof of the student's hard work was evident in their consistently high grades. "

"The science teacher demonstrated a proof for calculating the area of a triangle. "

"The knight's suit of proof was so strong that no ordinary sword could pierce it. "

"The whiskey had a proof of 80, making it a relatively mild drink. "

"Before submitting the report, I need to proofread it carefully for any mistakes. "

"The carpenter proofed the wooden planks to prevent water damage. "

"Before baking the bread, I need to proof the dough for several hours. "

"To see if the yeast was still active, I proofed it by mixing it with sugar and warm water. "

"a proof load; a proof charge"

"proof against harm"

"The whiskey is a proof spirit, so it has a high alcohol content. "