ascendant

position or state of being dominant or in control; "that idea was in the ascendant"

someone from whom you are descended (but usually more remote than a grandparent)

tending or directed upward; "rooted and ascendant strength like that of foliage"- John Ruskin

most powerful or important or influential; "the economically ascendant class"; "D-day is considered the dominating event of the war in Europe"