to give sth a value that is less than its real value 低估◆The currency is undervalued against the dollar. 这种货币兑美元被低估了。OPPovervalue
to not recognize sth/sb as being as good or as important as it/he/she, etc. really is 轻视；小看◆She left the firm because she felt undervalued. 她因感到不受重视而离开了那家公司。