Erroneous basically means "containing errors", and, since most of us are constantly suffering from mistaken notions, the word is often used in front of words such as "assumption" and "idea". It's also used to describe the kind of mistaken information that can lead to erroneous theories, erroneous conclusions, and erroneous decisions.
Examples of erroneous in a Sentence
When you're done, the programs scour your return for potential problems and erroneous data and let you correct them. Then, poof! Either print out your 1040 and related documents or follow the software prompts to file electronically.— Kathy Yakal, PC Magazine, 9 Mar. 1999Here we come face-to-face with the uncompromising rules of golf as Mr. Dobereiner recounts how Roberto de Vincenzo lost the 1968 Masters Tournament by a single stroke because he signed an erroneous scorecard.— Robert R. Harris, New York Times Book Review, 21 Oct. 1984To say truth, nothing is more erroneous than the common observation, that men who are ill-natured and quarrelsome when they are drunk, are very worthy persons when they are sober: for drink, in reality, doth not reverse nature, or create passions in men which did not exist in them before.— Henry Fielding, Tom Jones, 1749
a news article about the new virus that was filled with much erroneous information
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'erroneous.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.