de·base 
(dĭ-bās)
(dĭ-bās)tr.v. de·based, de·bas·ing, de·bas·es
To lower in character, quality, or value; degrade.
[DE- + BASE2.]
de·basement n.
de·baser n.
Synonyms: debase, degrade, abase, demean2
These verbs mean to lower in character or quality. Debase implies reduction in quality or value: "debasing the moral currency" (George Eliot).
Degrade implies reduction to a state of shame or disgrace: "If I pitied you for crying ... you should spurn such pity.... Rise, and don't degrade yourself into an abject reptile!" (Emily Brontë).
Abase refers principally to loss of rank or prestige: "Meg pardoned him, and Mrs. March's grave face relaxed ... when she heard him declare that he would ... abase himself like a worm before the injured damsel" (Louisa May Alcott).
Demean suggests lowering in social position: "It puts him where he can make the advances without demeaning himself" (William Dean Howells). See Also Synonyms at corrupt.
These verbs mean to lower in character or quality. Debase implies reduction in quality or value: "debasing the moral currency" (George Eliot).
Degrade implies reduction to a state of shame or disgrace: "If I pitied you for crying ... you should spurn such pity.... Rise, and don't degrade yourself into an abject reptile!" (Emily Brontë).
Abase refers principally to loss of rank or prestige: "Meg pardoned him, and Mrs. March's grave face relaxed ... when she heard him declare that he would ... abase himself like a worm before the injured damsel" (Louisa May Alcott).
Demean suggests lowering in social position: "It puts him where he can make the advances without demeaning himself" (William Dean Howells). See Also Synonyms at corrupt.