żmudny in English:

Your eccentricities can make you either charming or tedious.

Thanks to you, the backlog of tedious work has been completed.

tedious journey/task/job

We had to listen to all the tedious details.

The lecture was so tedious that i fell asleep

It took us more than two hours because of the tedious paperwork,

Waiting for a train is tedious.

Forty percent of the workforce are white-collar workers, most of whom have some of the most tedious and idiotic jobs ever concocted.

A tedious film seems to take longer than an exciting one of the same footage.

What is the most tedious process you have ever had to go through? One of the most tedious processes I've ever had to go through was waiting in immigration at the airport.

The definition of tedious is something that is boring and repetitive

Lack of a break after a long year's tedious work will reduce the efficiency of teachers. a tedious job /ˈtiːdiəs/

She was given tedious task of entering lists of numbers.

I hate doing the dishes! It’s so tedious.

‘And it’s incredibly tedious,’ Will said.

arduous journey/task

The first part of this book is the story of my own arduous journey of learning how to trust what I knew and what I did not know about healing.

All three of them had put in an arduous day.

Let us hope that the arduous process of ratifying this Treaty has finally come to an end.

After hours of arduous climbing, he finally reached the top of the mountain.

That was the years of arduous work in the mine.

His successors will face the arduous task of fleshing out the content of this “pivot.”

This is an arduous task!