Self-evident, intuitively obvious.
Presumed without analysis.
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.
Being in accord with established forms.
Official.
Relating to mere manipulation and construction of strings of symbols, without regard to their meaning.
Relating to formation.
Organized; well-structured and planned.
Relating to the form or structure of something.
Ceremonial or traditional.
Proper, according to strict etiquette; not casual.
An event with a formal dress code.
Formalin.
A formal parameter.
An evening gown.
An acetal formed from formaldehyde.