mostly; generally; for the most part
in a fundamental, essential or basic manner
used to refer to the most important or fundamental point the speaker is making; sometimes tending towards a meaningless filler word
Most importantly.
In front, prominently forward.
First in time.
Positioned in front of (all) others in space, most forward.
Coming before (all) others in time.
Closest to the bow.
Of the highest rank or position; of the greatest importance; of the highest priority.