What does the word adventitious mean?

Usage examples for adventitious

  1. But after allowing for the many adventitious circumstances which concurred to make Antinous the fashion, it is hardly unreasonable to assume that the spirit of poetry in the youth's story, the rumour of his self- devoted death, kept him alive in the memory of the people. – Sketches and Studies in Italy and Greece, Vol III. by John Symonds
  2. Second only to Burke in the grandeur and richness of his imagery, he greatly excelled him in readiness, in tact, and in those adventitious advantages which go so far to make an orator. – Collections and Recollections by George William Erskine Russell