by a long shot, by any means; by a measurable degree:
They haven't finished by a long shot.
Origin
1785-95
Examples from the web for long shot
We see the prison buildings in a long shot from the air.
However, the news is not all doom and gloom by a long shot.
However, in any marriage it is a long shot that both partners will be completely satisfied in their vocational arrangements.
How weak to try to attach a ridiculous claim to a post that never made any statement of the sort, not by a long shot.
It isn't bad by a long shot, but far from leading the pack in terms of quality.
Not by a long shot, but without something suitable as a replacement, it seems a necessary evil.
The gist of a lot of the posts seems to be it's a long shot but more power to them.
When it comes to radical energy solutions, an extreme long shot is a nuclear power scheme that would combine fusion and fission.
Although a long shot, it's not inconceivable to consider dire consequences to an ecosystem built on diatoms.
All that you have demonstrated is that scientists have committed immoral acts, not the same by a long shot.
British Dictionary definitions for long shot
long shot
noun
1.
a competitor, as in a race, considered to be unlikely to win
2.
a bet against heavy odds
3.
an undertaking, guess, or possibility with little chance of success
4.
(films, television) a shot where the camera is or appears to be distant from the object to be photographed
5.
by a long shot, by any means: he still hasn't finished by a long shot
Word Origin and History for long shot
n.
in the figurative sense of "something unlikely," 1867, from long (adj.) + shot (n.). The notion is of a shot at a target from a great distance, thus difficult to make. Cinematic sense is from 1922.
Slang definitions & phrases for long shot
long shot
modifier
: a long-shot victory
noun phrase
A person, horse, project, etc, that seems not likely to win or succeed; dark horse: But it's a pretty long shot I'm afraid(1869+)
A scene photographed from a distance; a long-range photograph (1940s+)