The word hankeringly describes a strong desire or longing for something. However, if you're looking for a synonym that conveys the same sentiment in a slightly different way, consider using the word yearningly. Likewise, you might use the words longingly or piningly to describe a similar desire. Another option might be to simply use the word craving instead. Other synonyms for hankeringly might include fervently, ardently, or passionately. Whatever word you choose, keep in mind that the important thing is to accurately convey the intensity of the desire or longing that you're trying to describe.