Answer: protean

AnswerCrossword Clue
PROTEANExceedingly variable
proteana type of protein (a nitrogenous organic compound, also PROTEID, PROTEIDE)
proteanassuming different forms
proteanreadily assuming different forms or characters.
PROTEANChameleonic
PROTEANFrequently changing
PROTEANArrangement for a tenor with piano, having many variations (7)
PROTEANAble to change shape
PROTEANMalleable
PROTEANChangeable in shape
PROTEANReadily assuming different forms
PROTEANChangeable; variable
PROTEANChangeable
PROTEANExtremely variable
PROTEANExtremely variable.
PROTEANReadily assuming different shapes.
PROTEANVery changeable.
PROTEANExceedingly variable.
PROTEANHighly variable
PROTEANEver-changing