Boring, monotonous, time consuming, wearisome. (adjective)
Examples of word tedious
CARROLL: Truckers say a ban would slow deliveries and make what they call a tedious job worse.
In school this is where teachers dragged out a boring five-paragraph essay by adding in tedious research, and mind-numbing outlines, before letting you just hammer out the rough draft like you wanted to do in the first place.
Also becoming tedious is the sight of the brothers pinned against walls and demons coming out of peoples mouths.
We continued our discussion by switching to the long-term tedious nuclear dossier of Iran.
In fact he went blind writing adolescent plots to rule the world in tedious and long winded detail under the bedclothes.