1) Abase 2) Cheapen 3) Demonetise 4) Demonetize 5) Denigrate 6) Devaluate 7) Downgrade 8) Lour 1) Cheapen 2) Degrade 3) Deprecate 4) Depreciate 5) Deprive of its value 6) Devaluate 7) Lose in value 8) Lower the value or quality of 9) Lower the worth of 10) Minimize the importance of 11) Reduce monetarily 12) Reduce the worth of 13) Reduces in worth 14) Remove the value from 15) To depreciate 
[v] - remove the value from 2. [v] - lower the value or quality of
devaluate, devalue To lessen or annul the value of.
verb lower the value or quality of; `The tear devalues the painting`