[amanaplanacanal]

As a language, English is probably as good as you are going to get. I has been simplifying for hundreds (thousands?) of years, and is fairly closely related to the languages spoken by most of the developed world, which makes it easier to learn.

The spelling is pretty bad, though. I'm guessing that even if you managed to clean up the spelling, it would be a temporary fix. Pronunciations change over time, and vary between dialects.