Hainamese noun 2adjective 1 noun[plural only]2 •the inhabitants of the island of Hainam •(Singapore, Malaysia) the people who trace their ancestry to Hainam or the surrounding area, especially those that ancestrally speak Hainanese. adjective1 •(Singapore, Malaysia) of or relating to the linguistic variety under Coastal Min under Min Chinese of the Sinitic family and its speakers or people of heritage from Hainam