Home › Words › U › underappraiseunderappraiseunderappraise means to appraise at too low a value.Among words judged in Lexicurio's Arena, underappraise ranks #10,065 of 42,747 for Qualifying.EtymologyFrom under- + appraise.verbTo appraise at too low a value.Definitions & examples from Wiktionary (CC BY-SA 3.0).