Longman Dictionary English From Longman Dictionary of Contemporary EnglishRelated topics: Photographyunderexposeun‧der‧ex‧pose /ˌʌndərɪkˈspəʊz $ -ˈspoʊz/ verb [transitive] TCPto not let enough light reach the film when you are taking a photograph OPP overexpose —underexposed adjective→ See Verb table ldoceonline.com