Before getting in perhaps Flintstone got on (5)

I believe the answer is:

fared

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'got on' is the definition.
(I've seen this in another clue)

I cannot understand how the rest of the clue works.

(Other definitions for fared that I've seen before include "Proceeded, made out" , "Got on, managed" .)

I've seen this clue in The Sunday Times and The Times.

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