from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Being at once opportune and to the point. See Synonyms at relevant.
- adv. At an appropriate time; opportunely.
- adv. By the way; incidentally: Apropos, where were you yesterday?
- prep. With regard to; concerning: Apropos our date for lunch, I can't go.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Of an appropriate or pertinent nature.
- adj. by the way, incidental.
- prep. Regarding or concerning.
- adv. By the way.
- adv. Timely; at a good time.
from the GNU version of the Collaborative International Dictionary of English
- Opportunely or opportune; seasonably or seasonable.
- By the way; to the purpose; suitably to the place or subject; -- a word used to introduce an incidental observation, suited to the occasion, though not strictly belonging to the narration.
from The Century Dictionary and Cyclopedia
- . To the purpose; opportunely; seasonably.
- 2. With reference or regard; in respect: followed by of.
- . With reference to that (a thing just mentioned); by the way: used absolutely, to introduce an incidental observation.
- Opportune; seasonable; to the purpose; pertinent; happy: as, an apropos remark.
- n. Pertinency.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. of an appropriate or pertinent nature
- adv. at an opportune time
- adv. introducing a different topic; in point of fact
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).(American Heritage® Dictionary of the English Language, Fourth Edition)
French à propos ("on that subject") (Wiktionary)