Lacking personal depth and substance; conceited, vain, shallow, superficial.
Having length, but no width, height or depth.
Lacking depth or believability; flat.
Ignorable; of little significance or value.
Commonplace, ordinary.
Pertaining to the trivium.
Relating to or designating the name of a species; specific as opposed to generic.
Self-evident.
Concerned with or involving trivia.
Of, relating to, or being the simplest possible case.
Indistinguishable in case of truth or falsity.