The Collaborative International Dictionary
Discrowning
Discrown \Dis*crown"\, v. t. [imp. & p. p. Discrowned; p. pr. & vb. n. Discrowning.] To deprive of a crown.
The end had crowned the work; it not unreasonably
discrowned the workman.
--Motley.
Wiktionary
discrowning
vb. (present participle of discrown English)