A great clue for 'what a pity' is 'alas.' It captures that sense of regret perfectly. Plus, it's short and sweet, so it fits nicely in a crossword. When I’m doing puzzles, these simple yet impactful words always stand out. ‘Alas’ just has a classic feel to it, reminiscent of old literature. It's one of those words that's so expressive while being compact, making it a puzzle favorite. I also love playing around with language, finding these little gems. They make crosswords not just challenging but also fun!