I. noun
Synonyms: deterioration 1, atrophy, decadence, declension, decline, degeneracy, degeneration, dégringolade, devolution, downfall
Antonyms: upgrade
II. verb
1.
Synonyms: depreciate 1, decry, devalorize, devaluate, devalue, lower, mark down, undervalue, write down, write off
Antonyms: upgrade
2.
Synonyms: degrade 1, break, bump, bust, declass, demerit, demote, disgrade, disrate, reduce
Antonyms: upgrade