Down grade

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a descent, as on a graded railroad.

See also: Grade

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in classic literature ?
They could barely keep the traces taut, and on the down grades just managed to keep out of the way of the sled.
The Government says its top priority at present was to engage with foreign representatives in the country and convince them to either revoke or down grade the adverse travel advisories on Sri Lanka.
Numis Securities said it now expected Goals to post profits for last year of pounds 8.1 million, a 10.6per cent down grade against its previous forecast.
Native Upmanship could prove the threat but he appears to be on the down grade.
(10.) Spurgeon, "A Fragment on the Down Grade Controversy," Sword and Trowel 23 (1887): 560.
I understand that prior to the unexpected Grade 11* listing a senior member of their team said dismissively that they knock down Grade 11 buildings all the time.
He accepted that Dickson, 53, was not financially motivated in knocking down Grade B listed Lanrick Castle, near Doune.
Railtrack had applied for permission to knock down grade A listed Broughty Ferry railway station, near Dundee, because it would cost more than pounds 1 million to refurbish the historic rail stop, built in 1838.
Ofqual did not, as the correspondent stated, 'move down grades for certain syllabuses in certain schools'.
The down grades are more than for any other advanced economy in the world.