tedium
ˈtiːdɪəm/Submit
noun
the state or quality of being tedious.
"the tedium of car journeys"
synonyms: monotony, monotonousness, tediousness, dullness, boredom, ennui, uneventfulness, lack of variety, lack of variation, lack of interest, lack of excitement, sameness, unchangingness, uniformity, routineness, humdrumness, dreariness, mundaneness, wearisomeness, tiresomeness, dryness, aridity, lifelessness, colourlessness, featurelessness, slowness, banality, vapidity, insipidity, blandness, prosaicness, jejuneness; long-windedness, prolixity, laboriousness, ponderousness, endlessness, interminableness; informaldeadliness; informalsameyness
"to relieve the tedium of the days, they sang or told stories"