The Collaborative International Dictionary
Indistinguishably \In`dis*tin"guish*a*bly\, adv.
In a indistinguishable manner.
--Sir W. Scott.
Wiktionary
adv. 1 In an indistinguishable manner; so that separate components or differences cannot be discerned. 2 (context archaic English) indiscriminately.
Usage examples of "indistinguishably".
The figures of Cavor and the guiding Selenite marched before me, the sides of their legs and heads that were towards the rivulet were clear and bright blue, their darkened sides, now that the reflection of the tunnel wall no longer lit them, merged indistinguishably in the darkness beyond.
A Su could wrap himself in his voluminous breechcloth, sit or lie on the ground, and blend almost indistinguishably with his surroundings.
She used to paste these into books, or send them to her friends, having first drawn a broad bar in blue pencil down the margin, a proceeding which signified equally and indistinguishably the depths of her reprobation or the heights of her approval.
All he remembers about the city he's in is a display of popular wedding stationery -- 20% off -- which, as he walked past it, seemed for a moment to merge indistinguishably with the cigarette ends, burger cartons and supermarket receipts on the pavement: so that for a moment everything became illegible to him, because the floor of the display window and the street, the inside and the outside, were only extensions of each other.