up against it adj. phr.,
informal Faced with a great difficulty or problem; badly in need.
The Smith family is up against it because Mr. Smith cannot find a job. You will be up against it if you don't pass the test. You will probably fail arithmetic. Compare: HARD UP, END OF ONE'S ROPE, BACK TO THE WALL
2.
[TahlilGaran] English Idioms Dictionary ▲