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".

ERRONEOUS definition: containing error; mistaken; incorrect; wrong. See examples of erroneous used in a sentence.

erroneous (ɪˈrəʊnɪəs) adj based on or containing error; mistaken; incorrect [C14: (in the sense: deviating from what is right), from Latin errōneus, from errāre to wander]

ERRONEOUS definition: 1. wrong or false: 2. wrong or false: 3. based on false information and therefore wrong; false: . Learn more.

Definition of erroneous adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Dec 14, 2025 · (law) Deviating from the requirements of the law, but without a lack of legal authority, thus not illegal. If, while having the power to act, one commits error in the exercise of …

• It is erroneous to believe that the decisions of one age should be binding upon another age. • It would be erroneous to overstate this apprehension, for there was another aspect to the …

er•ro•ne•ous•ly, adv. er•ro•ne•ous•ness, n. [uncountable] WordReference Random House Unabridged Dictionary of American English © 2025 er•ro•ne•ous (ə rō′ nē əs, e rō′ -), adj. …

Beliefs, opinions, or methods that are erroneous are incorrect or only partly correct. They did nothing to dispel his erroneous belief about the children's paternity. They have arrived at some …

erroneous, adj. meanings, etymology, pronunciation and more in the Oxford English Dictionary