The word "shrug" is commonly used to denote a gesture of indifference or ignorance. However, there are many synonyms for the word that offer different shades of meaning. For instance, "shrug off" suggests a dismissive attitude while "shrug away" denotes an attempt to repel something. "Shoulder," "hunch," or "lift" can be used to indicate the physical action that comes with a shrug. A "noncommittal gesture" fits the shrug that gives no indication of one's thoughts or feelings. "Evasive" could be used for a shrug that aims to avoid answering a question. Overall, there are many words that can be used to describe a "shrug," and careful word choice can enhance your writing.