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Superfluous \Su*per"flu*ous\, a. [L. superfluus overflowing;
super over, above + fluere to flow. See {Super-}, and
{Fluent}.]
More than is wanted or is sufficient; rendered unnecessary by
superabundance; unnecessary; useless; excessive; as, a
superfluous price. --Shak.

An authority which makes all further argument or
illustration superfluous. --E. Everett.

{Superfluous interval} (Mus.), an interval that exceeds a
major or perfect interval by a semitone.

Syn: Unnecessary; useless; exuberant; excessive; redundant;
needless.
※ -- {Su*per"flu*ous*ly}, adv. --
{Su*per"flu*ous*ness}, n.