quadreble noun 1verb 1forms 3 noun1 •A voice in a musical composition (usually for male voices) above the treble; descant.The voices include a counter (always below the tenor), a countertenor (moving above and below the tenor), mene, treble, and quadreble. — 1991 verb1 •(rare) To quadruple.Not so: for if you observe it, you are to double, treble, or quadreble the length or breadth, as you have occasion. — 1618 formsquadrebled · quadrebling · quadrebles