When it comes to synonyms for the word "wearisomely," there are a handful of options available. One common alternative is "tediously," which denotes something that is mundane, repetitive, and frustratingly dull. A similar term is "boringly," which implies a lack of interest or excitement in a particular task or activity. Another option is "laboriously," which suggests that a task or activity is difficult and requires significant effort to complete. Some other synonyms for "wearisomely" include "drearily," "tediously," "tiresomely," and "exhaustingly." Ultimately, the best synonym for this word will depend on the context in which it is being used, and on the speaker or writer's intention in using it.