The Collaborative International Dictionary
Extraneous \Ex*tra"ne*ous\, a. [L. extraneus, from extra. See Extra-, Strange.] Not belonging to, or dependent upon, a thing; without or beyond a thing; not essential or intrinsic; foreign; as, to separate gold from extraneous matter.
Nothing is admitted extraneous from the indictment.
--Landor.
-- Ex*tra"ne*ous*ly, adv.
Wiktionary
adv. In an extraneous manner.
Usage examples of "extraneously".
Think of a physically lopsided Tina, something he could never bring himself to disassemble, limping extraneously through life.
Then there came rumours, through some of the refugee craft of neutrals fleeing the hostilities, of a knot of Idiran fleets swarming round a volume of space near a recent raid location on the very outskirts of the galaxy, followed by a furious battle culminating in a gigantic annihilatory explosion, whose signature, when it was finally picked up and analysed, was exactly that produced when a beleaguered military GSV of the Culture had had time to orchestrate a maximally extraneously damaging destruct sequence.