Here are the possible solutions for ad's first proof clue
Answer
Clue
Relevancy
repro
Clue
Ad's first proof
Definition
(short for) reproduction, a piece of reproduction furniture
stet
Clue
"Nope, you had it right the first time," on a proof
fun
Clue
First word across in the first-ever crossword (1913) and the first of a dozen appearances of the word in this puzzle's grid, written word search-style (left, right, down, and diagonally) ... Can you f
