adv., a., sb. [F. à propos (used in Fr. as adv., adj. and sb.), f. à to + propos purpose, plan, f. L. prōpositum, pa. pple. of prōpōnĕre to set forth, propose.] Const. to, of.

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  A.  adv.

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  1.  To the purpose; fitly, opportunely.

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1668.  Dryden, Ess. Dram. Poesy. The French … use them with better judgment, and more àpropos.

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1708.  Addison, in Dk. Manch., Crt. Eliz. to Anne, II. 315. Stanhope and Earl arrived very àpropos.

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1714.  Mandeville, Fab. Bees (1733), II. 187. Men of prodigious reading … who judge ill, and seldom say any thing à propos.

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  2.  With regard to, in respect of, as suggested by. (Fr. à propos de.) absol. (as introductory to an incidental observation or question): By the way.

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1761.  Smollett, Gil Blas, IX. i. (1802), III. 44. But a-propos! Hast thou seen the girl?

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  Hood, Up the Rhine, 166. Apropos to which last, you will find inclosed [etc.].

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1883.  Black, Shandon Bells, III. xi. 265. Suddenly, and à propos of nothing, asking him how it was possible for a man to have three godmothers.

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  B.  adj. To the point or purpose; having direct reference to the matter in hand; pertinent, opportune, ‘happy.’

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1691.  T. H[ale], Acc. New Invent., 44. It is certainly … a propos what he had said before in that Page.

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1730.  Southall, Buggs, 20. The Thought was à propos.

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c. 1735.  Pope, Hor. Epist., II. ii. 154. A tale extremely apropos.

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1826.  Disraeli, Viv. Grey, III. vii. 117. Is there not a passage in Spix apropos to this?

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  C.  sb. An opportune or pertinent occurrence (obs.); pertinency.

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1783.  Europ. Mag., III. 246/2. But a greater apropos than this, happened from mere accident.

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1860.  Edinb. Rev., No. 225. 96. Few men … have described what they have seen with more apropos.

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