can't nail (something) down
can't nail (something) down
Unable to complete, do correctly, or be certain of some task or thing. I've been working on my speech for an hour, but I can't seem to nail it down. They couldn't nail down the terms of their agreement. I know I've heard this song before, but I can't quite nail it down.
See also: down, nail
Farlex Dictionary of Idioms.
- right on the nail
- nail a lie
- nail a/the lie
- nail on
- nail in
- hit the nail on the head, to
- by itself
- get hold of the right end of the stick
- beat on
- beat on (something)