Superadd /(?)/

Su·per·add

Superadd

v. t.

imp. & p. p. Superadded; p. pr. & vb. n. Superadding

  1. To add over and above; to add to what has been added; to annex, as something extrinsic.
    The strength of any living creature, in those external motion, is something distinct from, and superadded unto, its natural gravity.
    — Bp. Wilkins.
    The peacock laid it extremely to heart that he had not the nightingale's voice superadded to the beauty of his plumes.