Erratic

adj. unsettled, irregular, having no fixed course, tending to wander

n. large stone or boulder carried by a glacier and left in a new location (Glaciology)

An Erratic can refer toa glacial erratican erratic ant
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Adjective
1. having no fixed course; "an erratic comet"; "his life followed a wandering course"; "a planetary vagabond"
(synonym) planetary, wandering
(similar) unsettled
2. 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"
(synonym) fickle, mercurial, quicksilver(a)
(similar) changeable, changeful
3. 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
(synonym) temperamental
(similar) unreliable, undependable

(n.)
One who deviates from common and accepted opinions; one who is eccentric or preserve in his intellectual character.
  

(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.
  

(n.)
A rogue.
  

(a.)
Irregular; changeable.
  

(a.)
Having no certain course; roving about without a fixed destination; wandering; moving; -- hence, applied to the planets as distinguished from the fixed stars.
  

(a.)
Deviating from a wise of the common course in opinion or conduct; eccentric; strange; queer; as, erratic conduct.
  

adj.
erratical
1. wandering
آوارہ, گمراہ, ڈانواڈول, سر گرداں
2. moving
چلائے مان, غير مستقل, گھومتا ہوا