err
Concise Oxford English Dictionary © 2008 Oxford University Press:
err /əː/
▶verb be mistaken or incorrect.
■ (often as adj. erring) do wrong.
– phrases
err on the side of display more rather than less of (a quality): it is better to err on the side of caution.
err on the side of display more rather than less of (a quality): it is better to err on the side of caution.
– origin ME: from OFr. errer, from L. errare ‘to stray’.
'err' also found in these Oxford entries:

