trivial
This is no trivial achievement.
It’s not a trivial matter.
The proof is trivial.
No te preocupes por un problema tan trivial.
Don't worry about such a trivial problem.
Es trivial, pero no está claro para mí.
It's trivial, but it's not clear to me.
— El síndrome asténico (1989)
This is a trivial problem.