extraneous

Adjective Satellite

• not pertinent to the matter under consideration
  • "an issue extraneous to the debate"
• not essential
  • "the ballet struck me as extraneous and somewhat out of keeping with the rest of the play"
• not belonging to that in which it is contained; introduced from an outside source
  • "water free of extraneous matter"
• coming from the outside
  • "extraneous light in the camera spoiled the photograph"
  • "relying upon an extraneous income"

Adj

• Not belonging to, or dependent upon, a thing; without or beyond a thing; foreign.
• Not essential or intrinsic.

Examples

• Extraneous substances were found on my cup of water.
• to separate gold from extraneous matter

Synonyms

external, foreign, immaterial, impertinent, orthogonal, outside, additional, alien, extra, intrusive, superfluous

Antonyms

intraneous