un ‧ der ‧ val ‧ ue /ˌʌndəˈvæljuː $ -ər-/ BrE AmE verb [transitive]
[ Word Family: noun : ↑ valuables , ↑ value , values, ↑ valuation , ↑ valuer , ↑ overvaluation ≠ UNDERVALUATION , ↑ devaluation ; adjective : ↑ valuable , ↑ invaluable , overvalued ≠ UNDERVALUED , ↑ valueless , ↑ valued ; verb : ↑ value , ↑ devalue , ↑ overvalue ≠ ↑ undervalue ]
to think that someone or something is less important or valuable than they really are:
Society undervalues staying at home and looking after children.
Analysts claim that the firm’s assets were undervalued by £300 million.