How many letters does the top answer for “such that alteration is possible; having a marked tendency to change” have?

The most common answer is changeable (10 letters).

Crossword clue: such that alteration is possible; having a marked tendency to change

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

changeable 10 letters wn-def

such that alteration is possible; having a marked tendency to change

changeful 9 letters wn-def

such that alteration is possible; having a marked tendency to change