Related Clues:

• Tweak, say
• Way to fight extinction
• Take in or let out, e.g.
• Find one's niche?
• Make a change to
• Make books into movies, e.g.
• Get to fit
• Take up a hem, say
• Ego type
• Make into a film, perhaps
• Get to work, in a way
• Not leave as is
• Metamorphose
• Vary
• Acclimatize