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.