boring, tedious
María piensa que aprender idiomas extranjeros es tedioso y aburrido.
Maria thinks that learning foreign languages is tedious and boring.
It was a tedious job.
Ellos están aburridos de su tedioso trabajo.
They are bored with their tedious work.
Es algo tedioso usar las mayúsculas en un computador.
It's tedious to use capital letters on a computer.