sapere il fatto proprio
Italian
editEtymology
editLiterally, “to know one's own fact.”
Verb
edit- to have knowledge and competence in a particular area; to know one's job; to be capable in going about one's business; to know what is what; to know one's stuff
- Sa il fatto suo ma non lavora bene in squadra.
- He knows his stuff, but he does not work well in a team.