based on or containing error; mistaken; incorrect
WordReference Random House Learner's Dictionary of American English © 2025
er•ro•ne•ous /əˈroʊniəs, ɛˈroʊ-/USA pronunciation
adj.
er•ro•ne•ous•ness, n. [uncountable]
WordReference Random House Unabridged Dictionary of American English © 2025- containing error;
mistaken;
incorrect:The facts are correct but your conclusion is erroneous.
er•ro•ne•ous•ness, n. [uncountable]
er•ro•ne•ous
(ə rō′nē əs, e rō′-),USA pronunciation adj.
er•ro′ne•ous•ly, adv.
er•ro′ne•ous•ness, n.
- containing error;
mistaken;
incorrect;
wrong:an erroneous answer. - straying from what is moral, decent, proper, etc.
- Latin errōneus straying, equivalent. to errōn- (stem of errō) wanderer (derivative of err-; see err) + -eus -eous
- Middle English 1350–1400
er•ro′ne•ous•ness, n.
- 1.See corresponding entry in Unabridged inaccurate, untrue, false.
- 1.See corresponding entry in Unabridged accurate.
Collins Concise English Dictionary © HarperCollins Publishers::
'erroneous' also found in these entries (note: many are not synonyms or translations):
Abominable Snowman
- Götterdämmerung
- Sabattier effect
- West Goth
- ambystomid
- amiss
- archaebacteria
- avocet
- bean
- benedict
- bum
- cloud ear
- cursor
- dinarchy
- erron.
- fallacious
- fallacy
- fallible
- false
- humble pie
- improper
- impropriety
- inaccurate
- incorrect
- koala
- loosestrife
- manticore
- mis-
- misbelief
- misbelieve
- misconception
- miscount
- misdirection
- mistaken
- misuse
- monorchid
- mumpsimus
- obsidian
- old wives' tale
- orismology
- overleap
- pantoum
- pervert
- physiognomy
- pia mater
- refute
- rouse
- self-deceived
- sheatfish
- sumpsimus