Of the highest rank or position; of the greatest importance; of the highest priority.
Positioned in front of (all) others in space, most forward.
Coming before (all) others in time.
Closest to the bow.
In front, prominently forward.
First in time.
Most importantly.
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.