Depression, most people know, used to be termed “melancholia,” a word which appears in English as early as the year 1303 and crops up more than once in Chaucer, who in his usage seemed to be aware of its pathological nuances. “Melancholia” would still appear to be a far more apt and evocative word for the blacker forms of the disorder, but it was usurped by a noun with a bland tonality and lacking any magisterial presence, used indifferently to describe an economic decline or a rut in the ground, a true wimp of a word for such a major illness.