Examples from the Web for doubleness
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.
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