adiaphanousadj.

1658 T. C. in T. Flatman Naps upon Parnassus sig. B3 Upon the Gurmundizing Quagmires and most Adiaphanous Bogs, of the Author's obnubilated Roundelayes.

1670 S. Gott Divine Hist. Genesis World vii. 186 So also in the Superficies of any Adiaphanous Speculum, as Steel or other polished Metall.

1833 J. Waterworth tr. F. Véron Rule Catholic Faith 77 Nor will our adversaries ever be able to prove..that actions, which are prescribed by human laws, continue..indifferent or adiaphanous.

1855 J. Scoffern Elem. Chem. 103 We have transcalent and non-transcalent substances..corresponding with the expressions diaphanous and adiaphanous.

1903 Proc. & Trans. Liverpool Biol. Soc. 17 83 Wings oblong, with the axillary sinus semicircular, and the anal angle strong; the membrane adiaphanous, dingy whitish.

1993 H. Middleton Bright Country iii. 94 It is the blind brown trout. I see only one eye,..not yet entirely opaque, but adiaphanous.

2008 L. Miller Morning Star xviii. 242 The blackness returned, like an adiaphanous cloak draped over them from some point above.