Strange, foreign, alien, outside, and extrinsic are all synonyms for extrinsic.
Likely words are "superfluous" or "extraneous." The similar word is redundant (duplicating a function).
extraneous " not pertinent; irrelevant: an extraneous remark; extraneous decoration."
During the long, boring lecture, most people agreed that much of the information was extraneous.
Extraneous means 'coming from the outside'.
The crowd's not entirely silent, but there's not too much extraneous talking.
One handy way to dodge a difficult question is to earnestly begin talking about something extraneous to it.
No. Sometimes they are both extraneous.
The lab technicians said that the stray hair found on the toilet seat was from a previous guest who'd stayed in the hotel room, and was totally extraneous to the investigation.Exactly what I saw that night, I'm not sure, but it was extraneous to this plane of existence, and it still gives me nightmares.All seem to make values depend on extraneous factors.Many people may not want all this extraneous software cluttering up their hard drive.
No. Essential means that the thing is very important; an "essence." Meanwhile, extraneous means that the thing is something "extra," and not needed.
extraneous
extrinsic
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