noun U.S. Government.

a high-level rank, Grade 16, 17, or 18, in the federal civil service.
a government employee having such a rank.


of, relating to, or characteristic of such a rank or employee.

Nearby words

  1. supergiant,
  2. supergiant star,
  3. superglacial,
  4. superglue,
  5. supergovernment,
  6. supergranulation cell,
  7. supergraphics,
  8. supergrass,
  9. supergravity,
  10. supergroup

Origin of supergrade Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019