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Room for error or mistakes. I'm not very good at math, so I always leave a fudge factor when I'm tallying up my expenditures for the month.
Fig. a margin of error. I never use a fudge factor. I measure correctly, and I cut the material exactly the way I measured it. I built in a fudge factor of three percent.
fudge factora figure which is included in a calculation in order to account for some unquantified but significant phenomenon or to ensure a desired result.
Fudge, apparently originating in the mid 18th century as an exclamation of disgust or irritation, later acquired a specific verbal sense in printers' jargon, meaning to ‘do work imperfectly or as best you can with the materials available’.
n. a margin of error. I never use a fudge factor. I measure correctly, and I cut the material exactly the way I measured it.