Crossword Genius

Fast woman initially one of the flower people (6)

Ross

I believe the answer is:

whippy

'fast' is the definition.
(fast like a whip)

'woman initially one of the flower people' is the wordplay.
'initially' suggests taking the first letters.
'one of the flower people' becomes 'hippy' (hippies were often called 'flower people').
The first letter of 'woman' is 'w'.
'w'+'hippy'='WHIPPY'

(Another definition for whippy that I've seen is " flexible".)

I've seen this clue in The Times.
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