boredom

/ˈbɔrdəm/
noun
  1. The state of feeling tired and impatient because you are not interested or have nothing to do.
    • To fight boredom on rainy days, the kids built a fort in the living room.
    • She tried to hide her boredom during the meeting by doodling in her notebook.
    • The long lecture caused a lot of boredom among the students.