Really intending what is said (or planned, etc); in earnest; not jocular or deceiving
Committed.
Without humor or expression of happiness; grave in manner or disposition
Important; weighty; not insignificant
In a serious manner; seriously.
Indistinguishable in case of truth or falsity.
Commonplace, ordinary.
Pertaining to the trivium.
Ignorable; of little significance or value.
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.