When it comes to expressing doubt or uncertainty, "suspectedly" is just one word to choose from. Other synonyms that could be used include "tentatively," "dubiously," "questionably," "uneasily," "skeptically," "uncertainly," and "apprehensively." Each of these words carries its own nuances and shades of meaning, making them useful for different contexts or situations. For example, "tentatively" might be used to convey a more cautious or hesitant sense of doubt, while "apprehensively" might suggest a sense of fear or foreboding. Ultimately, the choice of synonym will depend on the writer's intent and the tone they wish to convey.