err on the side of caution
to be especially careful rather than taking a risk or making a mistake:
25 people have replied to the invitation, but I've erred on the side of caution and put out 30 chairs.
Thesaurus: synonyms and related words
Paying attention and being careful
- attention
- attention span
- be good, and if you can't be good, be careful idiom
- be on (your) guard idiom
- cautious
- centre
- eye
- focus
- hang
- hang on/upon sth
- have a care idiom
- have/keep your ear to the ground idiom
- hedge your bets idiom
- middle
- pay
- the/a glare of sth idiom
- tread carefully/gently/lightly idiom
- walk
- walk on eggs/eggshells idiom
- wary
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