happenstantially

Etymology
From happenstance (a blend of happening and circumstance), by analogy with circumstantially.

Adverb

 * 1)  By happenstance; occurring due to random chance.
 * 2) * 1975 January, Andrejs Plakans, "Peasant Farmsteads and Households in the Baltic Littoral, 1797", in Raymond Grew et al (eds.), Comparative Studies in Society and History: An International Quarterly, Cambridge University Press, volume 17, number 1, page 19,
 * The work force norm imposed on adults the need to join in a common effort aimed at survival, which was a condition qualitatively different from a group of coresident individuals having similar or identical occupations happenstantially.