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apropos

/ˌæp.ɹəˈpəʊ/ adjective

adjective Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about apropos at Wordnik → Where our words come from →

  1. Of an appropriate or pertinent nature.

adverb

  1. At an opportune time.
    your letter arrived apropos
  2. Introducing a different topic.
    incidentally, I won't go to the party

Origin

Borrowed from French à propos (“on that subject”). Similar in meaning and form, and to some extent etymology, to appropriate, but not a doublet of it.

From Wiktionary, via Kaikki.org (CC BY-SA)