According to MW: Top-10 Commonly-Confused Words, Vol. 2

[Wilson Gray]

#1: Flush Out/Flesh Out

Question:
To provide more details, should you _flush out_ or _flesh out_ your plan?
Answer:
flesh out

For millions of BE-speakers, this is akin to
Question:
If you were a judge, would you _mete out_ or _meet out_ justice?
Answer:
mete out


That is to say, _flush_ and _flesh_ fall together as [fl^S], hence the
MW question is one of spelling and not of pronunciation for some
speakers.

--
-Wilson
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All say, "How hard it is that we have to die!"---a strange complaint
to come from the mouths of people who have had to live.
-Mark Twain

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