From Wiktionary, the free dictionary
clouden (third-person singular simple present cloudens, present participle cloudening, simple past and past participle cloudened)
- (ambitransitive, sometimes figurative) To make or become cloudy or clouded.
1804, William Fordyce Mavor, Universal History, Ancient and Modern:
[…] but this served only to deprave his faculties, and to clouden his reason.
1951, Burma Weekly Bulletin, page 3:
Brothers and Sisters, just as I have confidence in the ultimate good of my country, so also have I faith in the Indi., greater to be, free from all tensions and uncertainties which cloudened her political horizon recently.
clouden