completeness (part of speech: noun) unity (part of speech: noun)
entirety (part of speech: noun) - The arts declined steadily
from day to day, until at length by a gradual process they
entirety lost all perfection of design. - "The Lives of the
Painters, Sculptors & Architects, Volume 1 (of 8)", Giorgio
Vasari. - Don't think that I accept them in their entirety. -
"The Metal Monster", A. Merritt. - At last it could not be seen
in its entirety, then only its face showed. - "The Giants From
Outer Space", Geoff St. Reynard.