Struttingly is an adverb often used to describe someone who walks or moves in a way that displays confidence and self-assurance. Its synonyms include proudly, confidently, swankily, boldly, arrogantly, haughtily, ostentatiously, and flamboyantly. Each of these words can be used to convey a slightly different nuance of demeanor and attitude. For example, swankily might suggest a more sophisticated or stylish approach to strutting, while arrogantly might imply a more negative connotation of overconfidence. Ultimately, the choice of synonym depends on the intention and context of the particular sentence.