1. The state of surpassing or going beyond limits; the being of a measure beyond sufficiency, necessity, or duty; that which exceeds what is usual or proper; immoderateness; superfluity; superabundance; extravagance; as, an excess of provisions or of light.
    • To gild refined gold, to paint the lily, To throw a perfume on the violet, ... Is wasteful and ridiculous excess. - Shakespeare
  2. The degree or amount by which one thing or number exceeds another; remainder; as, the difference between two numbers is the excess of one over the other.
    • That kills me with excess of grief, this with excess of joy. - Walsh
  3. An undue indulgence of the appetite; transgression of proper moderation in natural gratifications; intemperance; dissipation.
    • Be not drunk with wine, wherein is excess. Ephesians v. 18
    • Thy desire ... leads to no excess That reaches blame. - Milton
  4. Spherical excess, the amount by which the sum of the three angles of a spherical triangle exceeds two right angles. The spherical excess is proportional to the area of the triangle.
  5. A condition on an insurance policy by which the insured pays for the first part of any claim, in exchange for a lower premium.


  1. More than is normal, necessary or specified.

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