the.com/sever
To cut a thing in two so thoroughly the halves stop talking.
means To separate or cut off completely, whether a rope, a head, or a relationship.
from From Old French sevrer, from Latin separare, to separate — sever and separate are estranged twins born of the same word.
Legal splitCourts sever cases to try defendants separately.
Not sevenDespite spelling, no connection to the number.
Severance payMoney that cushions the cut you didn't choose.