To set out is to begin a journey, or to explain in an orderly way. Set out at dawn, set out the case.
The two senses share the idea of starting properly, whether on a road or on a page. To set out an argument means numbering the steps rather than merely stating the conclusion.
1phraseset outTo begin a journey, or to explain in an orderly way.
“They would set out before six to beat the traffic.”
set out is a phrase.
Practised in Phrasal Verbs