"As to" is a preposition that is often used to introduce a topic or subject. The phrase can sometimes feel repetitive or overused, so finding synonyms can help make your writing more concise and varied. Some possible alternatives to "as to" include "regarding," "concerning," "in regards to," "with respect to," "about," and "pertaining to." Depending on the context, other synonyms might be more appropriate. For example, if you're discussing multiple options or choices, you might use "as for" instead of "as to." Experimenting with different ways to introduce your ideas can make your writing more engaging and dynamic for your readers.