Answer: VOLATILE

AnswerCrossword Clue
VOLATILEFrivolous.
volatile(of a substance) Easily evaporated at normal temperatures
volatile(of a person) Liable to display rapid changes of emotion
volatile(of a computer's memory) Retaining data only as long as there is a power supply connected
volatileLiable to change rapidly and unpredictably, esp. for the worse
volatilea winged creature
VOLATILELiable to lead to sudden change
VOLATILESet off easily
VOLATILEMercurial
VOLATILEReadily evaporating
VOLATILELike stock prices, often
VOLATILELighthearted.
VOLATILEFickle.
VOLATILELight-hearted.
VOLATILEHard to predict
VOLATILEApt to explode
VOLATILEExplosive
VOLATILESubject to extreme swings
VOLATILEEasily excited