err on the side of (something)

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err on the side of (something)

To prioritize something, perhaps excessively or unnecessarily. Often used in the phrase "err on the side of caution." I like to err on the side of caution and always keep some money in my savings account.
See also: err, of, on, side
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

err on the side of

act with a specified bias towards something.
1999 Nature Der Sündefall's message may err on the side of alarmism, but it certainly is a good read.
See also: err, of, on, side
Farlex Partner Idioms Dictionary © Farlex 2017

err on the side of something

show slightly too much rather than too little of a quality, especially a good one: When I am marking exam papers, I always try to err on the side of generosity (= I give slightly higher marks than the students may deserve).
Err is an old-fashioned word meaning ‘make a mistake’.
See also: err, of, on, side, something
Farlex Partner Idioms Dictionary © Farlex 2017
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References in periodicals archive ?
With respect to the FDA, a type I error is the rejection or delayed approval of a drug that is safe and effective -- erring on the side of over-caution -- and a type II error is the approval of a drug that has unanticipated dangerous side effects, or erring on the side of under-caution.
But as children's softer skulls are even more at risk from any potential dangers connected to phone radiation, I'm pretty sure that Santa will be erring on the side of caution until Low junior is well into his teens.
LaSorda explained Chrysler is just erring on the side of caution, based on the recent run-up in oil prices.