v.intr.
1. be mistaken or incorrect.
2 do wrong; sin.
Phrases and idioms:
err on the right side act so that the least harmful of possible errors is the most likely to occur. err on the side of act with a specified bias (errs on the side of generosity).
Etymology: ME f. OF errer f. L errare stray: rel. to Goth. airzei error, airzjan lead astray