The sun was unclouded, and no rain fell. "Sun of Unclouded Righteousness" largely stopped being published in hymnals around 1875. The name derives from French "serein", meaning "serene", or "clear" (as in unclouded). In that lovely land of unclouded day. O they tell me of an unclouded day. It would provide us with an unclouded picture of the COVID-19 illness.