boresome

But it was a very ancient and boresome experience to Collins.

As fictionalized biography has a great present vogue, many must like it and some may even consider this one "thrilling" in the places where it is best written, though I should think any one must consider a good deal of it as both badly written and boresome. (11)

(less the latter, which can be boresome as soon as you get it.) I am conflicted about strictly intellectual approaches.