Deviating from normal opinions or actions; eccentric; odd.
Unsteady, random; prone to unexpected changes; not consistent.
A rock moved from one location to another, usually by a glacier.
Anything that has erratic characteristics.
Being in a healthy condition; not deranged; thinking rationally.
Mentally sound; possessing a rational mind; having the mental faculties in such condition as to be able to anticipate and judge the effect of one's actions in an ordinary manner.
Rational; reasonable; sensible.