apropos
[adjective]
Synonyms: relevant, ad rem, applicable, applicative, applicatory, apposite, germane, material, pertinent, pointful
[preposition]
Synonyms: about, against, anent, as for, as regards, as respects, as to, concerning, in re, in respect to, re, regarding, respecting, touching, toward, with respect to

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Antonyms: malapropos
Contrasted words: clumsy, gauche, inappropriate, inept
Related Words: meet, proper

[TahlilGaran] English Synonym Dictionary ▲

ap‧ro‧pos /ˌæprəˈpəʊ, ˈæprəpoʊ $ -poʊ/ adverb formal
[Date: 1600-1700; Language: French; Origin: à propos 'to the purpose']
apropos of something used to introduce a new subject that is related to something just mentioned:
He had nothing to say apropos of the latest developments.
apropos of nothing (=not relating to anything previously mentioned)
Apropos of nothing, he suddenly asked me if I liked cats!

[TahlilGaran] Dictionary of Contemporary English ▲