Also means
incorrectly
Usage Note
Erróneamente retains the double accent structure: the written accent on errónea (feminine base of erróneo) persists when -mente is appended, as Spanish grammar requires. It means 'in an erroneous manner' and is interchangeable with incorrectamente but carries a stronger implication of logical or factual error rather than a mere procedural mistake. The root adjective erróneo is a false friend — it means 'erroneous/mistaken,' not 'errant' in the sense of wandering.
Examples
"El dato fue interpretado erróneamente."
Natural Translation
The figure was interpreted erroneously.

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