unprompted

unprompted
    adj 1: proceeding from natural feeling or impulse without
           external stimulus; "an impulsive gesture of affection"
           [syn: {impulsive}, {unprompted}]
    

53 Moby Thesaurus words for "unprompted":
      arbitrary, automatic, autonomous, discretional, discretionary,
      elective, free, free will, gratuitous, impulsive, independent,
      instinctive, involuntary, nonmandatory, offered, optional,
      proffered, self-acting, self-active, self-determined,
      self-determining, spontaneous, unasked, unbesought, unbidden,
      uncalled-for, uncoerced, uncompelled, unconscious, undesigned,
      unforced, unguarded, unguided, uninfluenced, unintended,
      unintentional, uninvited, unmeant, unmeditated, unplanned,
      unpremeditated, unpressured, unpurposed, unrequested, unrequired,
      unsolicited, unsought, unthinking, unthought-of, unwitting,
      voluntary, volunteer, willful