fail in

fail in (something)

1. To not have high enough grades to pass a particular class. My parents got my report card and grounded me because I'm failing in two classes.
2. To not award a student a passing grade in a particular class. In this usage, a noun or pronoun can be used between "fail" and "in." I failed you in biology because you missed so many classes this semester.
3. To not be successful in an attempt to do something. So far, I've failed in my efforts to find an internship for the summer.
See also: fail
Farlex Dictionary of Idioms.

fail in something

to have not earned passing or satisfactory grades in some school subject. George is failing in geometry. I hope I do not fail in math.
See also: fail
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

fail in

v.
1. To fail to achieve some goal or effort: I am failing in all of my attempts to win the contest.
2. To achieve unsatisfactory grades in an academic subject: Because I am failing in math, I am seeing a tutor.
3. To give someone an unsatisfactory grade in an academic subject: My teacher failed me in algebra despite my hard work.
See also: fail
The American Heritage® Dictionary of Phrasal Verbs.
See also:
  • fail in (something)
  • be in (one's) favor
  • all downhill from here
  • grounded in (actual) fact
  • grounded in fact
  • actual
  • be on (one's) back
  • be on somebody's back
  • be on someone's back
  • be downhill all the way
References in periodicals archive
Attempts to allow cops to pull over unbuckled drivers fail in Virginia, West Virginia, North Dakota, South Dakota, and Utah.
The Circuit Court of Cook County, Illinois, for example, found that a cedent "must fail in its claims against all [reinsurers] in this cause because it breached an express obligation imposed upon by it by contract and by law" when it failed to report a claim for four years.