Etymology

Literally “who doesn't risk doesn't gnaw”:

• risicare is an alternative form of rischiare ‎(“to risk”), from rischio ‎(“risk”, noun), itself from the older form risco, of uncertain origin;
• rosicare ‎(“to gnaw”) is derived from a Vulgar Latin root *rosicāre, from Latin rōsus ‎(perfect passive participle of rōdō ‎(“gnaw, eat away”)).

Pronunciation

• IPA^(key): /ˌki nnon ˈri.zi.ka non ˈro.zi.ka/