the mind > goodness and badness > inferiority or baseness > baseness > base thing or person > [adjective] (3)
figurative. ‘Scurvy’, mean, paltry, contemptible. (Cf. scabbed, adj. 2.) Of persons.
Morally low; despicable, ignoble; reprehensibly cowardly, craven; selfish, mean. Of a person.
Of a thing: Base, degraded in character or type. Obsolete. rare.