doubleness

[ duhb-uh l-nis ]

/ ˈdʌb əl nɪs /

the quality or condition of being double.

deception or dissimulation.

Origin of doubleness

Middle English word dating back to 1325–75; see origin at double, -ness

This doubleness may easily make us poor neighbors and friends sometimes.

Walden, and On The Duty Of Civil Disobedience |Henry David Thoreau
Dual′ity, doubleness: state of being double; Dū′al-school, a school for both boys and girls; Dū′archy, government by two.

Chambers's Twentieth Century Dictionary (part 1 of 4: A-D) |Various
If you think well to carry this as you may, the doubleness of the benefit defends the deceit from reproof.

Measure for Measure |William Shakespeare
Intelligible matter reappears402 where we also find again the idea of doubleness of everything.

Plotinos: Complete Works, v. 4 |Plotinos (Plotinus)

Doubleness is apparently carried by all the pollen grains of such plants, but only by some of the ovules.

Mendelism |Reginald Crundall Punnett