Once and for all

What is Once and for all?

Once and for all definition and meaning on Dictionary terms:
the whole of (used in referring to quantity, extent, or duration): all the cake; all the way; all year.
the whole number of (used in referring to individuals or particulars, taken collectively): all students.

the greatest possible (used in referring to quality or degree): with all due respect; with all speed.
every: all kinds; all sorts.
any; any whatever: beyond all doubt.
nothing but; only: The coat is all wool.
dominated by or as if by the conspicuous possession or use of a particular feature: The colt was all legs. They were all ears, listening attentively to everything she said.
Chiefly Pennsylvania German. all gone; consumed; finished: The pie is all.

the whole quantity or amount: He ate all of the peanuts. All are gone.
the whole number; every one: all of us.

everything: Is that all you want to say? All is lost.

one’s whole interest, energy, or property: to give one’s all; to lose one’s all.
(often initial capital letter) the entire universe.

wholly; entirely; completely: all alone.
only; exclusively: He spent his income all on pleasure.

each; apiece: The score was one all.
Archaic. even; just.


reference: https://www.dictionary.com/browse/once–and–for–all