Froth"y (?), a. [Compar. Frothier (?); superl. Frothiest.]
1.
Full of foam or froth, or consisting of froth or light bubbles; spumous; foamy.
2.
Not firm or solid; soft; unstable.
Bacon.
3.
Of the nature of froth; light; empty; unsubstantial; as, a frothy speaker or harangue.
Tillotson.
© Webster 1913.