intransitive verb
: to turn out to be as stated, believed, planned, expected, hoped : measure up especially under testing
in the face of the sternest handicaps, down east individualism was still proving out — Time
if … the selected key word does not prove out, the compilations on possible key letters can be carried farther — Fletcher Pratt
: turn out well : prosper , succeed , thrive
wants to wait until the five now on order … prove out — Newsweek