Foxily is an adverb that means "in a cunning or sly manner". Some synonyms for foxily include sneakily, craftily, deviously, wily, guilefully, trickily, and artfully. Each of these words connotes a sense of cleverness, duplicity, or hidden motives. Sneakily and craftily both suggest an underhanded approach, while deviously and wily imply a more calculated and manipulative way of operating. Guilefully and trickily speak to the use of trickery and deceit, and artfully suggests skillful manipulation or deception. In essence, these synonyms all describe someone who is clever but not entirely trustworthy.