a. & adv. [ F. à propos; à (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 ]