D defs.my
Entry 1 sense Webster, 1913

Superfluous

/so͞op'-ẽrf-lwŭsˌ/ · Su·per·flu·ous · IPA /suˈpɝflu.əs/
01 a. More than is wanted or is sufficient; rendered unnecessary by superabundance; unnecessary; useless; excessive; as, a superfluous price.
  1. 1.
    More than is wanted or is sufficient; rendered unnecessary by superabundance; unnecessary; useless; excessive; as, a superfluous price.
    “An authority which makes all further argument or illustration superfluous.” — E. Everett.
Phrases & compounds
Superfluous interval — an interval that exceeds a major or perfect interval by a semitone.