Answer:

protean

AnswerCrossword Clue
PROTEANReadily assuming different forms
PROTEANEver-changing
PROTEANHighly variable
PROTEANExceedingly variable.
PROTEANVery changeable.
PROTEANReadily assuming different shapes.
PROTEANExtremely variable.
PROTEANExtremely variable
PROTEANChangeable
PROTEANChangeable; variable
PROTEANExceedingly variable
PROTEANChangeable in shape
PROTEANMalleable
PROTEANAble to change shape
PROTEANArrangement for a tenor with piano, having many variations (7)
PROTEANFrequently changing
PROTEANChameleonic