When it comes to expressing the lack of surprise, the word "unsurprisedly" may not be widely known or used. However, there are several synonyms that effectively convey the same idea. "Expectedly" is an excellent alternative, suggesting that the outcome was predicted or anticipated. Similarly, one might employ "predictably", emphasizing the predictable nature of the situation. Additionally, "unfazed" or "unphased" can be used to describe someone who remains composed and unaffected by the expected result. Other options include "nonchalantly" and "calmly", denoting a cool and collected response. In any case, these synonyms serve to describe the absence of surprise in various contextually appropriate ways.