The word "unallayed" means not relieved, eased or lessened. In order to express the same idea, there are many different synonyms that one can use. For example, one can use the word "unabated" which means not lessened in intensity or amount. Another option is the word "unmitigated" which means not lessened in any way or not softened. Some other synonyms for "unallayed" include "unrelieved," "unassuaged," "unappeased," and "unrestrained." All of these words help to convey the idea that something is not lessened or reduced in intensity or severity. Using different synonyms can help to add variety and nuance to one's writing and vocabulary.