err on the side of
US /ɜːr ɑn ðə saɪd əv/
UK /ɜːr ɑn ðə saɪd əv/

1.
偏向于, 宁可选择
to choose to do something that is safer or more cautious, rather than taking a risk
:
•
When in doubt, it's always better to err on the side of caution.
有疑问时,总是最好偏向于谨慎。
•
The judge decided to err on the side of leniency, given the defendant's clean record.
考虑到被告的清白记录,法官决定偏向于宽大处理。