Answer: PERMUTATION

AnswerCrossword Clue
PERMUTATIONImportunate?
PERMUTATIONRearrangement
PERMUTATIONRadical change in character
permutationthe arrangement of a set of things in every possible order
permutationA way, esp. one of several possible variations, in which a set or number of things can be ordered or arranged
permutationThe action of changing the arrangement, esp. the linear order, of a set of items