decided by personal opinion and not because of a rule or for a reason
whimsical, chance
having a strong possibility of being unsuccessful
dangerous, risky
likely to become different
erratic
uncertain; risky
risky
(with) a sound of bells
fickle, irresponsible
(of a person, behaviour) odd; not normal (and often amusing)
bizarre, unusual
(of a person, behaviours) likely to do unusual or unexpected things
unpredictable; wandering
disloyal
disloyal
(of a person) led by imagination instead of reason and experience
imaginary, romantic
wild and strange; impossible to carry out
strange, different; imaginary
(of a person) often changing one's feelings about another person
vacillating, blowing hot and cold
causing fun or laughter
comical, humorous
causing, having, the feeling that everything is turning round so that one cannot stand steady
silly, impulsive
too great to be calculated
countless, limitless
not consistent; contradictory; having parts that do not agree
contradictory, irregular
(of a person) having feelings, intentions etc that often change
changeable
contrary to rules, to what is normal and established
random, variable
(especially) (doing things, done) without a proper sense of responsibility
careless, reckless
(of a person) often changing (in opinion, temper etc)
flighty, temperamental
(of a person) deliberately continuing to do wrong; (of behaviour) unreasonable
mean, ornery; troublesome
(a portion of) a kind of alcoholic drink made from sugar-cane juice
eccentric
caused by temperament; quickly changing one's mood
angry most of the time; moody
easily frightened
shy
that cannot be counted
incalculable
not foreseeable
unpredictable
not predictable
changeable
not reasonable; excessive
not logical or sensible
that cannot be relied on; not to be trusted
not trustworthy, not true
(of a person, condition) not stable
doubtful
not firmly fixed or supported; likely to fall over; often changing in amount etc; (of behaviour) not having a regular pattern
shaky
not trustworthy
not dependable, unfaithful
varying; changeable; a quantity or thing (e.g. cost, temperature) that can change according to conditions
changing, changeable
(of a liquid) that easily changes into gas or vapour; (of a person, mood) changing quickly or easily from one mood or interest to another
explosive, changeable
not easily controlled or guided
contrary, unmanageable
strange and playful
playful, fanciful
wavy
doubtful, weak