[UNDER-1 5 c.] A swell below the surface; an undercurrent.
1849. Tait’s Mag., XVI. 760. This placid springtime of life had a strong underswell of sorrow.
1894. Cycl. Rev. Current Hist. (Buffalo, N.Y.), IV. 733. A certain insistence of tone which gives note of a strong underswell of feeling and purpose.
