Of the highest importance.
Highest, supreme; also, chief, leading, pre-eminent.
A chief or superior; (specifically, chiefly South Africa) an African chief having the highest status in a region; a paramount chief.
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.