wearisomely

/ˈwɪriˌsəmli/
adverb
  1. In a way that causes tiredness, boredom, or loss of patience; tediously.
    • The speaker droned on wearisomely for over two hours.
    • The rain fell wearisomely, turning the roads into muddy rivers.
    • She wearisomely repeated the same instructions to each new group of visitors.