adj.
Being at once opportune and to the point. See synonyms at relevant.
adv.
- At an appropriate time; opportunely.
- By the way; incidentally: Apropos, where were you yesterday?
With regard to; concerning: Apropos our date for lunch, I can't go.
[French à propos : à, to (from Old French a , from Latin ad-; see ad-) + propos, purpose (from Latin prōpositum, neuter past participle of prōpōnere, to intend; see propose).]
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.