Webster’s Revised Unabridged Dictionary · 1913
Tedium
Te′di·um, n. [L. taedium, fr. taedet it disgusts, it wearies one.] Irksomeness; wearisomeness; tediousness. [Written also tædium.] Cowper.
To relieve the tedium, he kept plying them with all manner of bams. Prof. Wilson.
The tedium of his office reminded him more strongly of the willing scholar, and his thoughts were rambling. Dickens.