What we really need is an artificial language for maximum ease of learning and use.
Don't use anyone's native language, but make a list of the best features and make one.
- Certainly no gender for asexual or non-living things.
- Pronounced the way it is spelled.
- Avoid sounds that major groups of people find hard to distingush.
- Avoid words that sound the same but mean different things.
- Unambiguous grammar.
- Consistent tenses.
- etc...
Perhaps add some single-word paradoxes to cut short the inevitable AI uprisings
If you make your tenses very structured, you should even be able to handle time travel tenses without any problems:
"I'm glad that I will have thought of this idea!"