hoarse + -en.
hoarsen (third-person singular simple present hoarsens, present participle hoarsening, simple past and past participle hoarsened)
- (transitive, intransitive) To make or become hoarse.
2009 March 19, Carol Kino, “A Trustee Who Defined an Era of Corporate Giving”, in New York Times:
- A canny business strategist who tends to express himself tersely — even more so now that his voice has been hoarsened by several strokes — he has rarely consented to interviews.