I. noun Date: 1857 a downward grade (as of a road), a descent toward an inferior state , II. transitive verb Date: 1930 to lower in quality, value, status, or extent, minimize , depreciate
DOWNGRADE
Meaning of DOWNGRADE in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012