extraneous (
http://definr.com/extraneous)
adj 1: not pertinent to the matter under consideration; "an issue
extraneous to the debate"; "the price was immaterial";
"mentioned several impertinent facts before finally
coming to the point" [syn:
immaterial,
impertinent]
2: not essential; "the ballet struck me as extraneous and
somewhat out of keeping with the rest of the play"
3: not belonging to that in which it is contained; introduced
from an outside source; "water free of extraneous matter";
"foreign particles in milk" [syn:
foreign]
4: coming from the outside; "extraneous light in the camera
spoiled the photograph"; "relying upon an extraneous
income"; "disdaining outside pressure groups" [syn:
external,
outside]