tedious

Etymology

English tedi(um) + -ous, from Old French tedieus, from Late Latin taediōsus, from Latin taedium (“weariness, tedium”).

adj

1. Boring, monotonous, time-consuming, wearisome.
   https://archive.org/details/cu31924030976785/page/n44/mode/1up pages 24–25 The very fact that these commonplace authors are never more than half-conscious when they write, would be enough to account for their dulness of mind and the tedious things they produce. […] https://archive.org/details/cu31924030976785/page/n45 page 26 The other kind of tediousness is only relative: a reader may find a work dull because he has no interest in the question treated of in it, and this means that his intellect is restricted. The best work may, therefore, be tedious subjectively, tedious, I mean, to this or that particular person; […] 1891, Arthur Schopenhauer, “On Style”, in T[homas] Bailey Saunders, transl., The Art of Literature: A Series of Essays … Selected and Translated with a Preface (Schopenhauer Series; 4), New York, N.Y.: The Macmillan Co.; London: Swan Sonnenschien & Co., Lim., →OCLC, pages 24–25 and 26