More nerve-racking (6)
I believe the answer is:
tenser
(Other definitions for tenser that I've seen before include "less relaxed" , "more nervous" .)
I've seen this clue in The Washington Post.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free.
Check out my app
or
learn more
about the Crossword Genius project.