late 14c., redresse, "reparation, compensation for injustice, injury, loss, etc., adjustment," late 14c., from Anglo-French redresce, Old French redrece, redresse, fromredrecier, redresier (see redress (v.)).
The particular commercial senses of "make safe against loss by payment of premiums; undertake to ensure against loss, etc." are from mid-17c. (replacing assure in that meaning). Related: Insured; insuring.
1680s, "expose to chance of injury or loss," from risk (n.), or from French risquer, from Italian riscare, rischaire, from the noun. By 1705 as "venture upon, take the chances of." Related: Risked; risks; risking.