It's clear, even if you stutter a lot (5)

I believe the answer is:

vivid

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'it's clear' is the definition.
(similar in meaning)

I don't understand the remainder of the clue.

(Other definitions for vivid that I've seen before include "Intensely deep/bright" , "Lifelike, striking" , "Brilliantly coloured - full of life" , "Presenting a clear and striking picture" , "Intensely striking in colour" .)

I've seen this clue in the Evening Standard.

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