Marked change — shipmate's room (anag) (13)

I believe the answer is:

metamorphosis

(Other definitions for metamorphosis that I've seen before include "Transmutation" , "Total change in character" , "Process of transformation" , "changing?" , "Complete change of appearance" .)

I've seen this clue in The Guardian.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.