# How to change symbol separating description item definitions with enumitem

I'm trying to alter the description environment with enumitem so that an item will be separated from its description by a dash rather than a colon. Having searched the documentation and this forum, I haven't found a solution. The closest I've come is this:

\begin{description}[labelindent=\parindent, leftmargin=*, format= --]

That puts the en-dash before the item, rather than after; not what I need.

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