from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Having no fixed or regular course; wandering.
- adj. Lacking consistency, regularity, or uniformity: an erratic heartbeat.
- adj. Deviating from the customary course in conduct or opinion; eccentric: erratic behavior.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. unsteady, random; prone to unexpected changes; not consistent
- n. A rock moved from one location to another, usually by a glacier.
- n. Anything that has erratic characteristics.
from the GNU version of the Collaborative International Dictionary of English
- adj. Having no certain course; roving about without a fixed destination; wandering; moving; -- hence, applied to the planets as distinguished from the fixed stars.
- adj. Deviating from a wise of the common course in opinion or conduct; eccentric; strange; queer.
- adj. Irregular; changeable.
- n. One who deviates from common and accepted opinions; one who is eccentric or preserve in his intellectual character.
- n. A rogue.
- n. Any stone or material that has been borne away from its original site by natural agencies; esp., a large block or fragment of rock; a bowlder.
from The Century Dictionary and Cyclopedia
- Wandering; having no certain course; roving about without a fixed destination.
- Deviating from the proper or usual course in opinion or conduct; eccentric.
- Moving; not fixed or stationary: applied to the planets as distinguished from the fixed stars.
- In medicine, irregular; changeable; moving from point to point, as rheumatic or other pains, or appearing at indeterminate intervals, as some intermittent fevers.
- In geology, relating to or explanatory of the condition and distribution of erratics. See II., 2.
- n. One who or that which has wandered; a wanderer.
- n. Specifically In geology, a boulder or block which has been conveyed from its original site, probably by ice, and deposited at a distance; an erratic block. See erratic blocks, under I.
- n. An eccentric person.
- In zoology, occurring in an unusual location.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. having no fixed course
- adj. likely to perform unpredictably
- adj. liable to sudden unpredictable change
Middle English erratik, from Old French erratique, from Latin errāticus, from errāre, to wander.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Old French erratique, from Latin erraticus. (Wiktionary)