You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.
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Question: Category: __E__E__E 
Clue: A form of address for some royalty, it means calm & unruffled

Answer: serene


Question: Category: SLOW DOWN 
Clue: Cinematic effect achieved by filming at faster than projection speed

Answer: slow motion


Question: Category: FICTIONAL CHARACTERS 
Clue: This 1992 Terry McMillan novel focuses on 4 friends:  Robin, Bernadine, Gloria & Savannah

Answer:
"waiting to exhale"