err
[verb]
Synonyms: make a mistake, blunder, go wrong, miscalculate, misjudge, mistake, slip up (informal)

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Related Idioms: go astray (or amiss or wrong), leave the straight and narrow
Related Words: miscalculate, lapse, slip (up), stumble, trip, transgress, trespass, offend, sin

[TahlilGaran] English Synonym Dictionary ▲

err /ɜː $ ɜːr/ verb [intransitive]
[Date: 1200-1300; Language: Old French; Origin: errer, from Latin errare]

1. err on the side of something to be more careful or safe than is necessary, in order to make sure that nothing bad happens:
It’s always best to err on the side of caution.

2. old use to make a mistake

[TahlilGaran] Dictionary of Contemporary English ▲