From Middle High German *vorslaben*, composed of *vor* ("before, forward") + *schlagen* ("to strike, hit"). The sense of "putting an idea forward" mirrors the English "to put forward a proposal."

Germans tend to use *vorschlagen* in both casual and formal settings without it sounding pushy. In business contexts, you'll often hear the polite formula *Darf ich vorschlagen, dass…?* ("May I suggest that…?"). Watch out for the separable prefix: in a main clause it splits — *Ich schlage vor* — while in a subordinate clause it stays together: *weil ich vorschlage*.