Important; weighty; not insignificant
Committed.
Without humor or expression of happiness; grave in manner or disposition
Really intending what is said (or planned, etc); in earnest; not jocular or deceiving
In a serious manner; seriously.
Very important.
Invigorating or life-giving.
Containing life; living.
Necessary to continued existence.
Necessary to the continuation of life; being the seat of life; being that on which life depends.
Capable of living; in a state to live; viable.
Relating to the recording of life events.
Relating to, or characteristic of life.