rare. [Back-formation from next.] = SOAP-SUDS. Chiefly in attrib. use.
1727. Boyer, Dict. Royal, I. s.v. Eau, Eau de Savonnage, soap-sud. Ibid., s.v. Savonnage.
1802. Spirit Public Jrnls., VI. 278. Your air-balloon sunk to soap-sud bubbles, when compared to it [sc. an eclipse].
1823. J. Badcock, Dom. Amusem., 74. The common soap-sud bubbles of children.
Hence Soap-suddy a.
1831. Blackw. Mag., XXIX. 1007. The soap-suddy waves in a wash-hand basin.
1850. S. Laing, Obs. Europ. People, xiii. 331. Its water is of a milky, greenish, or soap-suddy hue.