n. inadvertent incorrectness.
Syn. -- error. [ WordNet 1.5 ]

a. [ L. erroneus, fr. errare to err. See Err. ] 1. Wandering; straying; deviating from the right course; -- hence, irregular; unnatural. [ Obs. ] “Erroneous circulation.” Arbuthnot. [ 1913 Webster ]

Stopped much of the erroneous light, which otherwise would have disturbed the vision. Sir I. Newman. [ 1913 Webster ]

2. Misleading; misled; mistaking. [ Obs. ] [ 1913 Webster ]

An erroneous conscience commands us to do what we ought to omit. Jer. Taylor. [ 1913 Webster ]

3. Containing error; not conformed to truth or justice; incorrect; false; mistaken; as, an erroneous doctrine; erroneous opinion, observation, deduction, view, etc. -- Er*ro"ne*ous*ly, adv. -- Er*ro"ne*ous*ness, n. [ 1913 Webster ]