[syn: by the way, by the bye, incidentally, apropos]
The Collaborative International Dictionary of English v.0.48:
Apropos \Ap"ro*pos`\ ([a^]p"r[-o]*p[=o]`), a. & adv. [F. [`a]
propos; [`a] (L. ad) + propos purpose, L. proposium plan,
purpose, fr. proponere to propose. See Propound.]
1. Opportunely or opportune; seasonably or seasonable.
[1913 Webster]
A tale extremely apropos. --Pope.
[1913 Webster]
2. 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.
[1913 Webster]
WordNet (r) 3.0 (2006):
apropos
adv 1: at an opportune time; "your letter arrived apropos" [syn:
seasonably, timely, well-timed, apropos]
2: introducing a different topic; in point of fact;
"incidentally, I won't go to the party" [syn: by the way,
by the bye, incidentally, apropos]
adj 1: of an appropriate or pertinent nature [ant: malapropos]