inconstant
1. [ adjective ] likely to change frequently often without apparent or cogent reason; variable
Examples:

"inconstant affections" "an inconstant lover" "swear not by...the inconstant moon"- Shakespeare

Related terms: constant fickle false variable unstable volatile unfaithful changeable constancy
Similar spelling:   inconstancy
  inconsistent
  inconsequent
  inconvenient
  inconsistency
  incontinent
  insomnia
  incongruent
  insensate
  Inocencia
  innocense
  incontestable
  insensitivity
  incontestible
  inconsiderate
  in_common
  in_chains