[f. SOFT a. + HEAD sb.] One who has a soft head; hence, in mod. use, a silly or stupid person; a simpleton. (Cf. next.)
1650. Bulwer, Anthropomet., 22. The Brasilians Heads are as hard as the wood that growes in their Country, and when they will injure any white Man, they call him soft-head.
c. 1872. Hartleys Yorks. Ditties, Ser. II. 64. Shoo must be a poor little softheead.
1892. Manning, Pastime Papers, 86. To be treated as dreamers, enthusiasts or soft-heads.