【Irksome】 , 【tiresome】 , 【wearisome】 , 【tedious】 , 【boring】 mean burdensome because tiring or 【boring】 or both.
A person or thing is 【irksome】 that inspires distaste, reluctance, or impatience because of its demand for effort not made easy by interest.
A person or thing is 【tiresome】 that is dull and unenlivening and therefore is either intensely 【boring】 or soon productive of fatigue.
A person or, especially, a thing is 【wearisome】 that exhausts one's strength or patience through long-continued or constant call for effort, exertion, or attention, or through 【tiresome】 uniformity of character.
A person or thing is 【tedious】 that is tiresomely monotonous, slow, or prolix.
A person or thing is 【boring】 that causes boredom; the term is perhaps the most positive of the group since it implies an active depressing, wearying, or annoying.