Adjective

• S: (adj) extraneous, immaterial, impertinent, orthogonal (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"
• S: (adj) extraneous (not essential) "the ballet struck me as extraneous and somewhat out of keeping with the rest of the play"
• S: (adj) extraneous, foreign (not belonging to that in which it is contained; introduced from an outside source) "water free of extraneous matter"; "foreign particles in milk"
• S: (adj) external, extraneous, outside (coming from the outside) "extraneous light in the camera spoiled the photograph"; "relying upon an extraneous income"; "disdaining outside pressure groups"