falter in

falter in (something)

To waver or fail in regard to something. Hey, I was always faithful to Ron—I never faltered in my wedding vows!
See also: falter
Farlex Dictionary of Idioms.

falter in something

to fail in doing something; to exhibit a lack of something, such as faith, loyalty, perseverance, etc. He did not falter in his effort to see the project through to the end. I promised not to falter in my loyalty.
See also: falter
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • falter
  • falter in (something)
  • knock
  • knock (something)
  • do someone or something justice
  • ain’t 1
  • go out of
  • other than
  • let something drop
  • helluva someone/something
References in periodicals archive
Housing markets may falter in areas that experience increased successive hurricanes over a short period of time, according to the October 2001 issue of The Appraisal Journal, the professional journal of the appraisal industry.
Housing markets in hurricane prone areas may falter
That's why I think it's unacceptable to create a precedent whereby the Chief Inspector, who lays down demanding standards for others, should falter in meeting her own targets.
DEAR GERRIE: MA'AM MUST LEARN