Was heißt »simpel« auf Englisch?

Das Adjektiv »simpel« lässt sich wie folgt von Deutsch auf Englisch übersetzen:

Deutsch/Englische Beispielübersetzungen

Das klingt simpel, ich weiß.: It sounds simple, I know.
Origami kann trügerisch simpel wirken, doch verbirgt sich in den Knickfalten komplizierte Mathematik.: Origami can seem deceptively simple, hiding complex math within its creases.

From a flag-design point of view, this flag is unnecesssarily complex. The two blue bars are very simple indeed, but the centre image, unfortunately, is in almost photographic detail.
Many criticise Tom's style of writing for being too simple.
Toki Pona teaches us that it is difficult to speak in simple terms.
Other than this, things are not so simple.
Except for this, things are not so simple.
Aside from this, things are not so simple.
Aside from this point, things are not so simple.
Other than this point, things are not so simple.
With the exception of this point, things are not so simple.
She wrote in simple language.
In the beginning, love is usually simple. But then it can get pretty complicated.
We have a simple but spacious flat in the historic centre of town.
It all looks so simple – you might think that the machine does everything itself – but it's not quite like that.
"Why don't you move to an area where there's more going on?" "It's not that simple. I'm married with kids–" "And your husband comes from round here." "My wife, actually. No, she's from Middlesbrough."
What is this simple mystery of a place called here?
Unfortunately, there is no simple answer.
It's very simple to use.
No work is simple.
The instructions were very simple.
I can't tell her now. It's not that simple any more.