different between delusive vs spurious

English

delude +? -ive

delusive (comparative more delusive, superlative most delusive)

Producing delusions.
Delusional.
Inappropriate to reality; forming part of a delusion.
- 1847, Emily Brontë, Wuthering Heights, chapter XX:
  The poor thing was finally got off, with several delusive assurances that his absence should be short: that Mr. Edgar and Cathy would visit him, and other promises, equally ill-founded, which I invented and reiterated at intervals throughout the way.

Borrowed from Late Latin spurius (“illegitimate, bastardly”), possibly related to sperno or from Etruscan.

spurious (comparative more spurious, superlative most spurious)

False, not authentic, not genuine.
His argument was spurious and had no validity.
- 2013, Russell Brand, Russell Brand and the GQ awards: 'It's amazing how absurd it seems' (in The Guardian, 13 September 2013)[1]
  We witness that there is a relationship between government, media and industry that is evident even at this most spurious and superficial level. These three institutions support one another. We know that however cool a media outlet may purport to be, their primary loyalty is to their corporate backers. We know also that you cannot criticise the corporate backers openly without censorship and subsequent manipulation of this information.
Extraneous; stray; not relevant or wanted.
I tried to concentrate on the matter in hand, but spurious thoughts kept intruding.
Spurious emissions from the wireless mast were causing nearby electrical equipment to go haywire.
(archaic) bastardly, illegitimate

Send