'Erratic' definitions:

Definition of 'erratic'

From: WordNet
adjective
Liable to sudden unpredictable change; "erratic behavior"; "fickle weather"; "mercurial twists of temperament"; "a quicksilver character, cool and willful at one moment, utterly fragile the next" [syn: erratic, fickle, mercurial, quicksilver(a)]
adjective
Having no fixed course; "an erratic comet"; "his life followed a wandering course"; "a planetary vagabond" [syn: erratic, planetary, wandering]
adjective
Likely to perform unpredictably; "erratic winds are the bane of a sailor"; "a temperamental motor; sometimes it would start and sometimes it wouldn't"; "that beautiful but temperamental instrument the flute"- Osbert Lancaster [syn: erratic, temperamental]

Definition of 'Erratic'

From: GCIDE
  • Erratic \Er*rat"ic\, n.
  • 1. One who deviates from common and accepted opinions; one who is eccentric or preserve in his intellectual character. [1913 Webster]
  • 2. A rogue. [Obs.] --Cockeram. [1913 Webster]
  • 3. (Geol.) 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. [1913 Webster]
  • Note: In the plural the term is applied especially to the loose gravel and stones on the earth's surface, including what is called drift. [1913 Webster]

Definition of 'Erratic'

From: GCIDE
  • Erratic \Er*rat"ic\, a. [L. erraticus, fr. errare to wander: cf. F. erratique. See Err.]
  • 1. Having no certain course; roving about without a fixed destination; wandering; moving; -- hence, applied to the planets as distinguished from the fixed stars. [1913 Webster]
  • The earth and each erratic world. --Blackmore. [1913 Webster]
  • 2. Deviating from a wise of the common course in opinion or conduct; eccentric; strange; queer; as, erratic conduct. [1913 Webster]
  • 3. Irregular; changeable. "Erratic fever." --Harvey. [1913 Webster]
  • Erratic blocks, gravel, etc. (Geol.), masses of stone which have been transported from their original resting places by the agency of water, ice, or other causes.
  • Erratic phenomena, the phenomena which relate to transported materials on the earth's surface. [1913 Webster]

Synonyms of 'erratic'

From: Moby Thesaurus