Presumed without analysis.
Self-evident, intuitively obvious.
Based on hypothesis and theory rather than experiment or empirical evidence.
Developed entirely from scratch, without deriving it from existing languages.
In a way based on theoretical deduction rather than empirical observation.
Ideal beyond the mundane.
Ridiculous, ludicrous, or outrageous.
Preternatural or supernatural.
Strange, enigmatic, or mysterious.
Not of the earth; non-terrestrial.