supergrade

[ soo-per-greyd ]
/ ˈsu pərˌgreɪd /

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.

adjective

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

Origin of supergrade

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019