Main Entry: err

Pronunciation: \ˈer, ˈər\

Function: intransitive verb

Etymology: Middle English, from Anglo-French errer, from Latin errare to wander, err; akin to Old English ierre wandering, perverse, Gothic airzeis deceived

Date: 14th century

1 archaic : stray
2 a : to make a mistake <erred in his calculations> <erred on the side of caution> b : to violate an accepted standard of conduct