Main Entry: in·cer·ti·tude

Pronunciation: \(ˌ)in-ˈsər-tə-ˌtüd, -ˌtyüd\

Function: noun

Etymology: Middle English, from Middle French, from Late Latin incertitudo, from Latin in- + Late Latin certitudo certitude

Date: 15th century

: uncertainty: a : absence of assurance or confidence : doubt b : the quality or state of being unstable or insecure